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Wednesday, April 9, 2025

Leap

Leap (pronounced leep)

(1) To spring through the air from one point or position to another; to jump.

(2) Quickly or suddenly to move or act.

(3) To cause to leap.

(4) A spring, jump, or bound; a light, springing movement.

(5) The distance covered in a leap; distance jumped.

(6) A place leaped or to be leaped over or from.

(7) A sudden or abrupt transition.

(8) A sudden and decisive increase.

(8) In folk mythology, to copulate with or coverture of (a female beast) (archaic).

(9) In slang, to copulate with (a human) (archaic).

(10) A group of leopards.

(11) In figurative use, a significant move forward.

(12) In figurative use, a large step in reasoning (often one that is not justified by the facts, hence the sceptical phrase “a bit of a leap” & “quite a leap”).

(13) In mining (also used in geology), a fault.

(14) In aquatic management, a salmon ladder; a trap or snare for fish, historically constructed with fallen from twigs; a “weely”.

(15) In music, a passing from one note to another by an interval, especially by a long one, or by one including several other intermediate intervals.

(16) An intercalary measure, best-known as “leap year”, “leap second” et al.

(17) In pre-modern measures of weight, half a bushel.

Pre 900: From the Middle English lepen, from the Old English hlēapan, from the Proto-West Germanic hlaupan, from the Proto-Germanic hlaupaną (a doublet of lope, lowp, elope, gallop, galop, interlope and loop).  It was cognate with the German laufen (to run; to walk), the Old Norse hlaupa the Gothic hlaupan, the West Frisian ljeppe (to jump), the Dutch lopen (to run; to walk), the Danish løbe and the Norwegian Bokmål løpe, from the primitive Indo-European klewb- (to spring; stumble) (and may be compared with the Lithuanian šlùbti (to become lame) & klùbti (to stumble).  The verb forms are tangled things.  The third-person singular simple present tense is leaps, the present participle leaping, the simple past leaped or leapt (lept & lope the archaic forms) and the past participle is leaped or leapt or (lept & lopen the archaic forms).  That leapt and leaped remain in concurrent use is another of those annoy things in English which are hangovers from their ancient entrenchments in regional use and, as a general principle leapt tends to be is preferred educated British English while leaped is seen more frequently in North America (although leapt is in those places not uncommon, especially in areas with historical ties to England).  The transitive sense as in “pass over by leaping” was in use by the early fifteenth century and there are references to the children’s game “leap-frog” documented in the 1590s, and so obvious was the use of that figuratively it probably quickly was adopted but the first attested entry dates from 1704.  The familiar “to leap tall buildings in a single bound” comes from the Superman comics of the 1940s although in idiomatic use, “leaps” has been paired with “bounds” since at least since 1720.  Leap is a noun, verb & adjective, leaper & leapling are nouns and leaping and leapt & leaped are verbs; the noun plural is leaps.

The leap year is “a year containing 366 days” and use dates from late fourteenth century Middle English lepe gere, a genuine innovation because no equivalent term existed in the Old English. The origin is thought to come from the effect of fixed festival days, which normally advance one weekday per year, to “leap” ahead one day in the week.  The Medieval Latin was saltus lunae (omission of one day in the lunar calendar every 19 years), the Old English form being monan hlyp.  The adjustments happened in the calendars of many cultures, always with the purpose of ensuring the man-made devices for tracking dates (and therefore time) remained consistent with the sun; summer needed always to feel like summer and winter like winter.  Different methods of handling the intercalary were adopted and in England the bissextile was the device.  The noun & adjective bissextile (plural bissextiles) dates from the early 1580s and was from the Latin bisextilis annus (bissextile year), the construct being bisextus + -ilis, deconstructed as bis- (two; twice; doubled) + sextus (sixth) + dies (day) and was a reference to the Julian calendar's original reckoning of its quadrennial intercalary day as a 48-hour 24 February (subsequently distinguished as the two separate days of the sixth day before the March calends (sexto Kalendas Martii) and the “doubled sixth day”.  In modern use, 24 February is now understood as “five days before 1 March” but in Roman use it was called “the sixth” because the counting of dates was then inclusive.

The most physically demanding (and dangerous) part of Lindsay Lohan’s impressive leap into a Triumph TR4 in Irish Wish was undertaken by a body double (the young lady in this case deserving the “stunt-double” title).

Ready to leap: Lindsay Lohan with stunt double Aoife Bailey (b 1999).

Lindsay Lohan's Netflix movie Irish Wish (2024) was said by Irish reviewers to be "a mix of Leap Year meets Just My Luck meets Freaky Friday in which Lohan stars as quiet book editor Maddie Kelly, who embarks on a journey to find love by learning to love herself first."  Like Irish Wish, Leap Year (2010) was filmed in Ireland but unlike 2010, 2024 was a leap year.  IMCDB’s (Internet Movie Cars Database) comprehensive site confirmed the Triumph TR4 was registered in Ireland (ZV5660, VIN:STC65CT17130C) as running the 2.1 litre version (17130C) of the engine.  The Triumph 2.1 is sometimes listed as a 2.2 because, despite an actual displacement of 2138 cm3; in some places the math orthodoxy is ignored and a "round up" rule applied, something done usually in jurisdictions which use displacement-based taxation or registration regimes, the "rounding up" sometimes having the effect of "pushing" a vehicle into a category which attracts a higher rate.  Those buying a TR4 for use in competitions with a 2.0 litre limit could specify the smaller unit from the factory but being based on a tractor engine (!) and thus fitted with wet-cylinder liners, “sleeving” a 2.1 back to 2.0 wasn’t difficult.  The lack of the "IRS" (independent rear suspension) badge on the trunk (boot) lid indicates the use of the live rear axle and that detail was of no significance in the plot although, given the leap scene, a convertible of some sort would have been required.  Although on the road the IRS delivered a smoother ride, those using TR4s in competition usually preferred the live rear-axle because it made the car easier to steer “with the throttle”.

The replacement of the bissextile by the then novel 29 February every four years-odd appears such an obviously good idea it seems strange it took centuries universally to be adopted in England although the documents reveal the shift was certainly well in progress by the mid-fifteenth century and in an echo of later practices, the more curmudgeonly the institution, the slower the intrusion of the new ways, the Admiralty and houses of parliament ignoring 29 February until well into the 1500s.  It wasn’t until the Calendar (New Style) Act (1750) passed into law that 29 February received formal recognition in UK law.  The reform worked well from the start but in some jurisdictions, government lawyers took no chances and for the handful of souls born on a 29 February, their birth dates were deemed to be 28 February or 1 March for all legal purposes (eligibility for drivers licenses or pensions, age of consent etc).  One born on 29 February is a “leapling” and there are said to be a few as five million of these lonely souls on the whole planet.  In many countries hospitals and midwives note the frequency with which expectant mothers approaching March request staff do whatever is required to avoid them giving birth to a leapling, fearing the child will feel deprived by having fewer birthdays than their siblings of friends.  The math of the leap year is it is one (1) evenly divisible by 4, (2) except for years are evenly divisible by 100 except that (3) years evenly divisible by 400 are leap years.  So, 2000 was while 1900 was not; 2100 will not be a leap year, but 2400 will be.  However, because the rotation of the Earth is changing (and thus the length of days), as is its distance from the Sun, even a 29 February now and then is not enough to keep everything in sync.  So, there are also leap seconds, spliced in as needed and unlike 29 February, only those dealing with atomic clocks and such notice addition.

Leap is common in idiomatic use:  To do something in “leaps and bounds” suggests commendably quick progress.  A “leap in the dark” is to take some action while being uncertain of consequences and the related “leap of faith” is trusting in something that cannot be seen or proven so in a sense they’re two ways of saying much the same thing although “leap of faith” does also imply some trust in something or someone.  To have one’s heart “leap into one’s throat” is an allusion to the sensation felt sometimes in the throat when something scary happens.  To “leap for joy” is much the same as “jump for joy” and describes joyous happiness.  To “leap at” something is enthusiastically to take up an offer, avail one’s self of an opportunity etc.  When doing so, one might be said to “leap into action”.  To be cautioned to “look before you leap” is to suggest one should be sure of things before doing something; if one ignores the advice then it’s a “leap of faith” or a “leap into the dark”.  To “leapfrog” is to skip a step in some process, the connotation almost always positive.  To suggest someone “take a flying leap” is much the same as telling them to “go jump in the lake” or, as is now more common: “fuck off”.  The concept of the "quantum leap" was in 1913 introduced (as the "quantum jump") by Danish physicist Niels Bohr (1885–1962) in his "Bohr model" of the atom.  In the strange world of quantum mechanics it describes the discontinuous change of the state of an electron in an atom or molecule from one energy level to another and was adopted figuratively to refer to an "abrupt, extreme change".  In modern use, it has come to mean a large or transformative change, a use to which pedants sometimes object but this is how the English language works.  The “leap year bug” is jargon rather than a idiom and describes the growing number of instances of problems caused by computers (and related machines) for whatever reason not correctly handling the existence of leap years.  Most are caused by human error and some are not being rectified because the original error has been built upon to such an extent that it’s easier to handle the bugs as they occur.  If something is said to be “a bit of a leap” or “quite a leap” it means there's some scepticism about the relationship one thing and another (often cause & effect). 

Jaguar's Leaper

Left to right (top row): Buick, Packard & Pierce-Arrow; (centre row): Rolls-Royce, Bentley & Mercury; (bottom row): Duesenberg, Mercedes-Benz & Nash.

The radiator cap of course began as a mere functional device which could be unscrewed to allow coolant to be added but, inevitably, possibilities occurred to stylists (they weren’t yet “designers”) and soon the things were a small platform for miniature (though many were anything but small) works of art to covey an image to suit at least what was imagined to be the character of the vehicle on which they sat.  Although such embellishments are now remembered for their decorative qualities (and many in the art deco era during the inter-war were lovely creations), some genuinely were functional and “topping-up” the coolant was for decades a frequent part of the motoring experience so, however attractive they may have been, their use as a handle means they may be thought architectonic as well as artistic. The Jaguar Leaper had fangs and while that sounds ominous for pedestrians, some of the radiator cap & hood emblems looked more lethal still and even before the “safety movement” of the 1960s, there had been discussions about the dangers they posed.  For the safety of pedestrians, the few survivors now are spring-loaded or retract when the vehicle is in motion.

Leaper on 1960 Jaguar Mark 2 3.8.  Owners found the fitting handy when opening the hood.

Leaper” really was the factory’s name for the lunging feline figure which for decades adorned the space atop or behind the grill on many Jaguars.  The story of the origin is murky and while there may be some myth-making in it, the most likely explanation seems to be that when late in 1934 newly appointed Ernest William "Bill" Rankin (1898-1966, Advertising Manager and Public Relations Officer, Jaguar Cars 1934-1966) settled (from a list of charismatic wild animals) on “Jaguar” as a name for a new “sporty” SS (then the company name) car and, part of the “brand identity” was to design an appropriate radiator cap ornament.  Rankin was acquainted with the draftsman & technical illustrator Gordon Crosby (1885–1943) who he knew to be an amateur sculptor and it was to him the commission was granted.  Crosby delivered a prototype cast in bronze and according to company mythology, Jaguar’s founder, Sir William Lyons (1901–1985) thought it looked like “a cat shot off a fence” but liked the concept so, lengthened and softened into something sleeker, the refined shape emerged as the “Leaper”, first fitted in 1938.  The tales do differ, some suggesting Sir William’s “cat shot off a fence” thoughts were prompted by the sight of an earlier, third–party ornament which inspired him to task Mr Rankin with finding a replacement and, in the absence of documentary proof, Jaguar fans can pick the story they prefer.

Leaper on 1950 Jaguar Mark V 3.5.  The Mark V (1948-1951) was the last Jaguar with the external radiator cap and thus the last time a Leaper was also a cap-handle.

The SS name came from the Swallow Sidecar Company which Lyons had in 1922 co-founded with William Walmsley (1892–1961), reorganized as “S.S. Cars” after 1934 when Walmsley withdrew and the adoption in 1935 of “Jaguar” as a model name was mere marketing and nothing to do with the by then unsavoury reputation of the German SS (Schutzstaffel (protection squad), which began in 1923 as a small security guard for Adolf Hitler (1889-1945; Führer (leader) and German head of government 1933-1945 & head of state 1934-1945) but which evolved into a kind of parallel army for the Nazi Party and later into an armed formation almost a million-strong).  Even by 1945 when motor vehicle production resumed and the corporate name S.S. Cars formerly was changed to “Jaguar Cars Limited”, the rationale was the stronger brand identity of the latter rather than an aversion to anything associative with the Nazis.  Indeed, in 1957 Jaguar returned to SS as designation with the release of the XKSS, a road-going version of the Le Mans-winning D-Type race car.

An early Leaper (left) and the later "in flight" version (right) with the fully extended hind legs.

First fitted to production SS Jaguars in 1938, it became standard equipment on all until 1951 when the Mark V was discontinued.  As the last Jaguar to feature an external radiator cap, the assumption was that was the end of the Leaper and the strikingly modernist XK120 which created a sensation at the 1948 London Motor Show had only a radiator grill; the spirit of the age was that the ornaments were antiquated relics.  However, elsewhere in the industry, modernity and nostalgia managed peacefully to co-exist and while there was no revival of external radiator caps, the ornaments refused to die and from expensive Mercedes-Benz and Rolls-Royce to the most humble Austins and Chevrolets, the chromed constructions continued and sometimes grew, those not able to sit atop grills (many now with no “top” as such) re-imagined as hood (bonnet) ornaments.  So, in 1955 the Jaguar Leaper made a comeback on the new small saloon (the 2.4), the mascot using the subtle post-war re-working of the hind legs, made more outstretched to suggest the big cat in “mid-leap”, about to take its prey.

Rendered usually in fibreglass anodized with a shiny silver finish (although some, daringly, were gloss black), large leapers were often a feature of Jaguar dealerships (left).  Once decommissioned, they were sometimes sold and, applying dreadful and indefensible gender stereotyping, were a good gift for the garden (right) of the Jaguar-owning husband or boyfriend who "has everything". 

On the saloons, the design lasted 14 years and it was offered as an option on the XK150 (1957-1961) for while the XK120 (1948-1954) in 1948 had seemed streamlined modernity exemplified, the world had moved on and by 1957, although much improved and still stylish, the lines now seemed baroque rather than minimalist; the Leaper now fitted in well.  For the big Mark X saloon in 1961, paradoxically, a smaller Leaper was cast and this remained in use until the car (by then called 420G) was retired in 1970 so it was thus the last of the early Leapers, the XJ unadorned upon its debut in 1968 with the last of the legacy saloons (240, 340 (1967-1969 and both renamed and often de-contented versions of the Mark 2 (1959-1967)), S-Type (1963-1968) & 420 (1966-1968) produced in 1969.  The aftermarket though remained buoyant with many XJs and XJSs fitted with Leapers by owners who liked the look or dealers who thought they would.  It does seem they were fitted at the plant to many of the New Zealand-assembled XJs and the factory may have been in two minds about it: the hoods of all XJs (1968-1992) included on the underside skin- panel marks indicating where the holes should be drilled.  Not until the X300 XJ in 1994 would they again be factory-fitted to some models (in “pedestrian friendly” spring-loaded form) and this continued until 2005.

1958 Jaguar XK150 DHC (drop head coupé, left) and 1967 420G (right).

When in 1957 the Leaper appeared as an option on the XK150, Jaguar used the standard part fitted to the saloons but for the Mark X in 1961, a smaller version was cast, despite the car (stylistically something of a preview of the “fuselage” Chryslers of 1969) being the widest then produced in the UK (and it would remain so until 1992 when the company released the XJ220).  So, although the Leaper genuinely was smaller, the compression of relativities exaggerated the effect.  Jaguar took the opposite approach to Mercedes-Benz, the Germans creating a larger cartouche (the three-pointed star inscribed within a circle which sat atop the grill) for use on the big 600 Grosser (1963-1981).  What that did was maintain the relative dimensions familiar from the symbol’s use on smaller models.

Leaper on a US market 1999 Jaguar Vanden Plas (X308) which in the US market were fitted with the fluted grill used otherwise only on the Daimler variants.  The solid-timber picnic tables (a feature adored by the English middle class) were much admired.

The US market Vanden Plas models were the only Jaguars on which the Leaper was used in conjunction with the fluted grill fitted to the home market and RoW (rest of the world) Daimlers.  Because it was Mercedes-Benz and not Jaguar which after 1966 held the US rights to the Daimler brand, Daimlers since then sold in the US were badged as Jaguar Vanden Plas although they were otherwise identical to Daimlers including the fluted fittings.  The supercharged Daimler Vanden Plas was the most exclusive of the X308s and was noted for details such as the rear picnic tables being crafted from solid burl walnut timber rather than the veneer over plastic used on cheaper models.

1970 S2 Jaguar E-Type (top) from the "R2" run of 1000-odd (almost all of which were registered as 1971 models) with the Leaper badges on the flanks (left-side p/n BD35865 (left); right side p/n BD35866 (right)).  A Growler appeared in the front centre-bar (right).

The Series 2 E-Type (1968-1971) was marred by the clutter of bigger bumpers, protuberant headlight assemblies, badges and side-marker lights and so much did they detract from lovely, sleek lines of the Series 1 cars (1961-1967), bolting a luggage rack to the boot (trunk) lid probably seemed no longer the disfigurement it would once have been.  The disfigurement had begun with the transitional E-Types (the so-called 1.25 & 1.5 cars built in 1967) and indicate what would have been necessary to ensure post-1973 MGBs & MG Midgets conformed with the US headlight height stipulation.  It could have been done on the MGB but the shape of the Midget made the modification impossible (at least within aesthetic acceptability) but BL (British Leyland) took the cheaper route (always their preferred option) and raised the suspension height, compromising handling and lending the things a slight cartoonish quality but by then power had been so reduced by emission controls the view probably was handling prowess was no longer so important.  Remarkably, demand for both the by the antiquated MGB and Midget remained strong until sales finally ended in 1980.  The left-hand (left) and right-hand (right) fender badges, being directional, were different part numbers (BD35865 & BD35866 respectively) and those used on E-Types were silver on black whereas the variants used on the XJs were gold on black, some of which depicted the leaping feline at a slight slope, both matters of note for those wishing to restore cars to the challenging “factory original” standard.

1976 Jaguar XJC 4.2.

This XJC is one of many in the wild which, at some point, was fitted with a Leaper but it’s a shame whoever made the addition didn't at the same time remove the unfortunate vinyl roof.  Like the headlight covers sometimes added to the later (S1.25 & 1.5) S1 E-Types, removing an XJC's vinyl roof is one of the rare exceptions Jaguar's usually uncompromising originality police not only tolerate but encourage.  The Leaper badges on the flanks (behind the front wheel arch) were factory-fitted on the Series 1 (1968-1973) & Series 2 (1973-1979) XJs but whether on the XJ or E-Type were just disfiguring clutter and having them in silver & gold and with the feline sometimes at a different angle seems a minor but needless complication to the production process.

Still under the control of the doomed British Leyland, Jaguar lacked the resources fully to develop the XJC (1975-1998) and although it was displayed to much acclaim in 1973, not for another two seasons would it appear in showrooms, the programme starved of capital because greater priority was afforded to the XJ-S (1975-1996 and from 1991 officially “XJS”, a change most of the world informally had long adopted) which was thought a product with greater potential in the vital US market.  The XJC thus debuted with problems including (1) flawed sealing of the side windows which resulted in intrusive wind-noise, (2) a tendency of the doors to droop because, although longer and thus heavier than those of the four-door saloons, the same hinges were used and (3) the pillarless (ie a two-door hardtop) construction induced a slight flexing in the roof’s metal and while not a structural issue, because regulators had (quite sensibly) had lead removed from paint, the paint on the roof was prone to crazing.  The solutions (the development of exotic paint additives or re-designing the roof with heavier-gauge metal) would have been expensive and time-consuming so, in the British Leyland tradition, the Q&D (quick & dirty) approach was preferred and a vinyl roof was glued on but modern paints mean the ugly vinyl can now be removed so the roof’s lovely lines can be admired.

Jaguar’s cancelled Growler (left) and the new (EV-friendly) Leaper.  According to the MBAs, the message the Leaper conveys is: “Always leaping forward, it is a representation of excellence and hallmark of the brand.

The companion bad to the Leaper was the “Growler” which featured the head of a Jaguar, mid-growl.  There were over the years many version of the Growler and it appeared variously on trunk-lids, grills, steering wheel bosses and such.  Because as a fitting it was never rendered in a way likely to cause injury to pedestrians, it might have been supposed it wouldn’t be vulnerable to cancellation but it transpired the Growler poses a significant moral hazard, presumably on the basis that while the somehow sensuously feminine Leaper is acceptable, the Growler embodies toxic masculinity.  Whether Jaguar’s MBAs discovered this from focus groups or divined it from their own moral superiority hasn’t be revealed but in 2024 the company announced the Growler would not re-appear when the new range was launched in 2025.  Given the public response to the DEI (diversity, equity & inclusion) themed preview of the company's EV (electric vehicle) re-brand, the presence or not of the Growler may not be of great significance but a new expression of the Leaper, (with something of a stylistic debt to the IBM logo), would be included so there’s that.

1985 Jaguar XJ-SC with after-market large Leaper.  Because of regulations, US the market XJ-S used quad circular headlights rather than the twin oval units otherwise fitted and while many don't like them, the "four eyes" look was closer to Jaguar's traditions.

Leapers have been fitted to some XJ-S and XJSs where they really don’t belong, the factory never installing one.  If it’s done, the least-worse approach is to use the small Leaper from the Mark X/420G and remove the Growler badge (if fitted) while the WCS (worst case scenario) is to leave Growler in place and add a large Leaper which really is too much clutter; with pre-modern Jaguars, less usually is more.  Still, for those who insist, reproductions of the classic 4¾ inch (120 mm) feline predator are available and those manufactured by German Jaguar tuner Jochen Arden comply with the EU’s rigorous safety regulations in that maximum pedestrian impact protection is afforded by the design integrating both lateral and horizontal rotation of the assembly.  The part is supplied as a kit which includes adapter plates to suit a number of otherwise leaperless jags and, being German-made, there is of course a “lifetime corrosion warranty”, the small print limited to (1) rusty Leapers purchased after November 2011, (2) not damaged and (3) validity restricted to the original purchaser and presentation of the original invoice.

1988 Jaguar XJ-S V12 Convertible by Hess & Eisenhardt (left) and 1989 Jaguar XJ-S V12 Convertible (right).  Note the bulkier soft-top used by the factory, necessitated by retention of the coupé's fuel tank.  The after-market, anodized plastic fittings on the wheel arches are, on an XJ-S, as undesirable as a Leaper.

When introduced in 1975, the XJ-S was available only as a coupé, the prevailing feeling in industry it was only a matter of time until US regulators outlawed convertibles.  For a number of reasons, the ban was never imposed and by the 1980s toes were again being dipped in the topless market, Jaguar in 1982 releasing the XJ-SC which featured a targa-like structure somewhere between that used on the Triumph Stag (1970-1977) and the various landaulets with “fold-back” roofs.  It was thus not a true “convertible” and sales were disappointing, demand limited further by the thing being purely a two-seater, the rear compartment re-configured as a generously-sized storage apace.  The dealer-feedback (notably from the US) however indicated there would be demand for a convertible XJ-S, something confirmed by US specialists Hess & Eisenhardt selling some 2000 of the conversions fabricated between 1986-1988.  Accordingly, in 1988 the factory released an XJ-S convertible and although also a two-seater, it proved a great success.  Interestingly, the factory’s design almost replicated the approach earlier taken by Jochem Arden with most of the coupe’s components retained.  This did necessitate the soft-top not folding especially low, unlike the Hess & Eisenhardt cars although to achieve that, modifications were made to the fuel tank and among some that proved controversial.

1968 Mercury Cougar GT-E 428 in Augusta Green Poly (left) and 1968 Mercury Cougar GT-E 427 in Grecian Gold (right).  Other than the Jaguaresque iconography, about the only thing European about the Cougar was the use of the French spelling of “litre”.  Ford in 1966-1967 also used a “7 Litre” badge, for a model which was fitted variously with the 427 & 428 cubic inch (7.0 litre) FE V8s.  The interchangeable badges were probably not a cost-saving measure but may have been to avoid the complaints Shelby American received as a consequence of fitting both the 427 and the less robust 428 to AC Shelby Cobras universally badged as “427”.

1968 Mercury Cougar GT-E 427 in Grecian Gold (left side badge).

Ford's Mercury division also had a stylized feline, introduced in 1967 when the Cougar debuted.  Unlike Jaguar's symbol, the cougar wasn't leaping but was caught more in mid-prowl although Mercury's marketing department would probably have liked people to have thought of it like that; the Cougar was that sort of car.  Although in colloquial use, cougars are often referred to as “big cats”, in zoological taxonomy, felinologists restrict the “big cat” classification to the genus Panthera (lions, tigers, leopards, snow leopards & jaguars) and one defining feature of the Panthera cats is their ability to roar, made possible by a specific adaptation in the larynx and hyoid bone.  Lacking the anatomical feature, like cheetahs, cougars are not able to roar.  Often known as the mountain lion, puma, or Puma concolor, despite their size, the cougar is more closely related to smaller cats so it’s properly a “large” cat rather than a “big cat”.

Friday, February 28, 2025

Corvette

Corvette (pronounced kawr-vet)

(1) In historic admiralty use, a flush-decked warship of the seventeenth & eighteenth centuries having a single tier of guns and one size down from a frigate; in the US Navy called a sloop of war (usually truncated to sloop).

(2) In current Admiralty use, a lightly armed and armored blue-water warship, one size down from a frigate and capable of transoceanic duty.

(3) A GRP-bodied sports car produced in the US since 1953 by General Motors’ (GM) Chevrolet division.

1630–1640: From the French, from the Middle French corvette (a small, fast frigate), from the Middle Dutch corferkorver, corver (pursuit boat), the construct on the model of corf (fishing boat (literally “basket”)) + -ette (the diminutive suffix) or the Middle Low German korf (small boat; literally “basket”).  The source of both was the Latin corbis (basket) and, despite there existing also in Latin the corbita (navis) (slow-sailing ship of burden, grain ship), again from corbis, the relationship between this word and the later European forms is disputed.  The suffix –ette was from the Middle English -ette, a borrowing from the Old French -ette, from the Latin -itta, the feminine form of -ittus.  It was used to form nouns meaning a smaller form of something.  The Italian corvette & the Spanish corbeta are French loan-words, the German equivalent being korvette.  The obsolete alternative spelling was corvet.

Naval Battle between the French corvette La Bayonnaise and the British frigate HMS L'Embuscade, 14 December 1798, by Jean Francois Hue (1751-1823).

Historically, the term corvette, as applied to warships by various navies, can be misleading, the vessels varying greatly in size, displacement, armament and suitability, making some mor suitable than others for use on the high seas (ie the so-called "blue water").  As a general principle, a corvette was understood to be a warship larger than a sloop, smaller than a frigate and with fewer and sometimes smaller-bore guns than the latter, always arrayed on a single deck.  Although envisaged originally as a blue-water ship, they were allocated mostly to costal duties (ie "white water") or the range of activities smaller vessels fulfilled in a fleet support role.  In the manner of military mission creep, overlap emerged and in some navies there were occasions when newer corvettes were at least as large and well-gunned as some frigates although the Royal Navy tended to maintain the distinctions, finding the smaller ships a useful addition in the seventeenth century, their fast build rate affording the Admiralty the means quickly to augment the reach and firepower of a fleet.  To the British Admiralty, they anyway were still called sloops and it wasn’t until the 1830s the first vessels designated corvettes left UK shipyards.  It seems to have been the French Navy which first described the “big sloops” as corvettes but, whether by strategic design or in an attempt to confound the espionage activities of opponents, by the late eighteenth century, French naval architects designing corvettes the British would have defined as frigates.

HMCS Bowmanville (K 493), Royal Canadian Navy Corvette of WWII.

Because of the nature of sea battles prior to World War II (1939-1945), ships the size of the corvette tended to be neglected, the interest in smaller warships centred on the ever smaller torpedo boats and the two work-horses of the fleets, the frigate and destroyer, both of which were better suited to support cruisers patrolling the trade routes of the empire and the battleships of the high-seas fleets.  What saw a revival of interest was the war-time need to protect the trans-Atlantic and Arctic Sea convoys.  While the small corvettes, marginal in blue-water conditions, weren’t ideal for the role, they could be produced quickly and cheaply and, as a war-time necessity, were pressed into service as a stop-gap until more destroyers became available.  An additional factor was their small size which meant they could be built in many of the small, civilian shipyards which would have lacked the capacity to construct a frigate, let alone a destroyer.  Since the war, corvette has as a designation essentially become extinct but in many navies there have long been in service frigates and fast patrol boats which correspond in size with the traditional WWII corvette.


The early Chevrolet Corvettes, C1, C2 & C3 

1953 Corvette.

By 1952, the success in the US of MG and Jaguar had made it clear to Chevrolet that demand existed for sports cars and the market spread across a wide price band so with the then novel GRP (glass reinforced plastic, soon better known in the US as "fiberglass") offering the possibility of producing relatively low volumes of cars with complex curves without the need for expensive tooling or a workforce of craftsmen to shape them, a prototype was prepared for display at General Motors’ 1953 Motorama show.  Despite the perception among some it was the positive response of the Motorama audience which convinced GM’s management to approve production, the project had already be signed-off but the enthusiastic reaction certainly encouraged Chevrolet to bring the Corvette to market as soon as possible.  The name Corvette was chosen in the hope of establishing a connection with the light, nimble naval vessels and indisputably the modern lines made the essentially pre-war MGs look as archaic as they were and even the Jaguar XK120 was now obviously an evolution of the way sports cars might have looked by 1945 had the war not postponed progress.

1953 Corvette.

That haste however brought its own, unique challenges.  In 1953, Chevrolet had no experience of large-scale production of GRP-bodied cars but neither did anybody else, GM really was being innovative.  The decision was therefore taken to build a batch of three-hundred identical copies, the rationale being the workers would be able to perfect the assembly techniques involved in bolting and gluing together the forty-six GRP pieces molded by an outside contractor.  Thus, by a process of trial and error, were assembled three hundred white Corvettes with red interiors, a modest beginning but the sales performance was less impressive still, fewer than two-hundred finding buyers, mainly because the rate of production was erratic and with so few cars available for the whole country, dealers weren’t encouraged to take orders; uncertainty surrounded the programme for the whole year.  Seldom has GM made so little attempt actually to sell a car, preferring to use the available stock for travelling display purposes, tantalizing those who wanted one so they would be ready to spend when mass-production started.

1954 Corvette.

The first Corvettes had been produced on a small assembly line in Flint, Michigan to allow processes closely to be observed & optimized but by late 1953, Chevrolet was ready for high-volume runs, moving production to a plant in Saint Louis, Missouri with the capacity to make ten-thousand a year.  In anticipation of the Corvette being a regular-production model, three additional colors (black, red, and blue) were offered and the black soft-top was replaced by one finished in tan.  However, despite the enhancements, demand proved sluggish and fewer than four-thousand were sold in 1954 and there were reasons.  In 1961, Jaguar would stun the world with its new sports car, powered by a triple-carburetor 3.8 litre straight-six but in 1953, although Chevrolet’s Corvette boasted the same specification and a much admired body, it wasn’t anything like the sensation the E-type would be at Geneva.  The 1954 Corvette had gained a revised camshaft which increased power by 5 horsepower (hp), an output respectable by the standards of the time but the only transmission available was the Powerglide, a two speed automatic which for robustness and reliability matched the Blue Flame six-cylinder engine (an updated version of the pre-war "Stovebolt") to which it was attached but neither exhibited the dynamic qualities which had come to be expected from a sports car although owners would have to get used to it: the Powerglide would be the only automatic transmission offered in a Corvette until 1968.  In truth, the Corvette was betwixt & between; not quite a sports car yet lacking the creature comforts to appeal to those wanting a relaxed GT (grand-tourer).

1955 Corvette V8.

Chevrolet in 1955 solved the problem of the Corvette’s performance deficit by slotting in the new 265 cubic inch (4.3-litre) V-8 which would later come to be called the small-block and become a corporate stable, appearing over the decades by the million in various forms in just about every Chevrolet and some models from other divisions (though this corporate sharing would not be without controversy).  Rated now at 195 hp which felt more convincing than the previous year’s 155, it was offered also with a three-speed manual transmission and could now run with the Jaguars, Mercedes-Benz and Ferraris on both road and track; the Corvette had become a sports car and while not cheap, compared with the competition, it was conspicuously good value.  Most 1955 Corvette V8s were fitted with the two-speed Powerglide automatic transmission but the factory's records confirm there were 19 with the three-speed manual (as "special orders", the manual unlisted as an option in most of sales literature).

1956 Corvette.

The V8 option had been introduced late in 1955 but the response of buyers had convinced Chevrolet where the future lay; once available, only seven had chosen the old Blue Flame six so for 1956 the Corvette became exclusively V8-powered, a specification by 2025 still not deviated from (although auxiliary electric motors would in the next century appear).  To emphasize the dual role the car now plausibly could fulfil, the Powerglide became optional and revisions to the engine meant power was up to 210 hp although for those who wanted more, a dual four-barrel carburetor setup could be specified which raised that to 225.  Still made from GRP, the revised styling hinted at some influence from the Mercedes-Benz 300SL (W198, 1954-1963) but had practical improvements as well, external door handles appearing and conventional side windows replaced the fiddly removable curtains, a civilizing addition some British roadsters wouldn’t acquire until well into the next decade.  There was also the indication Chevrolet did take seriously the dual role for in addition to the Powerglide remaining available, buyers could now specify a power-operated soft top and internal company documents noted the appeal of this feature "to women", a target market even then.  Whether it was sports car or GT was now up to the customer.

Jaguar E-Type advertising copy, 1971.

Chevrolet's experience in finding the six-cylinder Corvette had limited appeal once their V8 became available was in 1971 reprised across the Atlantic when Jaguar released the Series 3 E-Type (sometimes known in the US as XKE).  Jaguar's V12 project had a long gestation and by the time eventually it entered production, the 420G (1961-1970 and known originally as the Mark X) which had been intended as its first recipient, had been retired.  The task of engineering the much smaller XJ (introduced in 1968) to house the V12 was absorbing much energy so it was the E-Type in which the new engine was first used.  Jaguar made the effort to prepare the new S3 E-Type to use both the long-running, 4.2 litre (258 cubic inch) XK straight-six and the 5.3 litre (326 cubic inch) V12, including printing promotional material, even glossy, full-color, multi-lingual brochures.

Jaguar E-Type advertising copy, 1971.

However, before series production began, the decision was taken to offer the S3 only with the V12 and although there are tales of six XK-engined prototypes having been built, the Jaguar-Daimler Historic Trust insists the true number was four (2 roadsters & 2 coupés with one right hand drive (RHD) and one left hand drive (LHD) version of each); the LHD coupé with a manual transmission survived although when offered at auction in England, its rarity (genuinely it is unique) didn't attract a premium as it sold for a price little different from what might be expected for a V12 in the same condition.  By 1974, when the effects of the spike in the price of oil began to affect demand for engines as thirsty as the V12, the E-Type was in its last days so the company made no attempt to resurrect one with the smaller engine, unlike Mercedes-Benz which quickly made available in the R107 roadster and C107 coupé the 2.7 litre (168 cubic inch) six as an alternative to the 3.5 (214 cubic inch) & 4.5 (276 cubic inch) V8s.  Although it couldn't at the time have been predicted, the R107 in both six & eight cylinder form remained available until 1989 so the efforts taken during the first oil shock proved worthwhile.  It wouldn't be until 1983 Jaguar offered the XJS (1975-1996 and (sort of) the E-Type's replacement) with a six-cylinder engine and, remarkably, the XJS would enjoy a longer life even than the R107, the last not leaving the factory until 1996.           

1957 Corvette (fuel injected).

In 1957, things started to get really serious, a four-speed manual transmission was added, the V8 was bored out to 283 cubic inches (4.6 liters) which increased power and, in an exotic touch which matched the Mercedes-Benz 300 SL, Rochester mechanical fuel-injection was an (expensive) option, allowing the Corvette to boast an engine with one hp per cubic inch, something in the past achieved only by the big dual-quad Chrysler Hemis, offered only in heavyweightmachines which, although fast, were no sports cars, heavy cruisers rather than corvettes.  Unlike the electronic fuel-injection systems others flirted with in the era, Rochester's mechanical system proved reliable although it did demand well-trained mechanics to ensure it remained in tune.

1958 Corvette.

A noted change for 1958 was the tachometer moving from the centre of the dashboard to a place directly in from to the driver, probably a wise move given the propensity of the fuel-injected engine to high-speed and output continued to rise, by 1960 315 hp would be generated by the top option.  One big styling trend in 1957 had been the quad headlamps allowed states relaxed their lighting regulations and these were added, unhappily according to some, to the Corvette for 1958.  However, even many of those of those who admired the four-eyed look thought the lashings of chrome a bit much.  Chrome was quite a thing in Detroit by 1958 and De Sotos, Lincolns, Buicks and such were displaying their shiny splendour but it probably didn’t suit the Corvette quite so well which was unfortunate given it was adorned with much, even the headlight bezels getting a coating.  A change of management at the top of Chevrolet's styling department ensured 1958 was peak-chrome for the sports car; cars from other divisions would for some time continue to drip the stuff but the Corvette would be notably more restrained.

1962 Corvette.

Although the changes since 1963 had been many, the Corvette was still in its first generation but the 1962 model would be the end of the line.  The front end had earlier been revised from its chromed origin and in 1961 a redesigned rear arrived which saw the debut of the quad-taillight design which would for decades remain a distinctive feature.  1962 saw the introduction of a 327 cubic-inch (5.3 litre) V8, the fuel-injected version now up to 360 hp.  The C2 would be the last to include a trunk (boot) lid until the release for the C5 for the 1998 season, access to the storage area in the "lidless" era being a reach behind the seats.  Rear-deck mounted luggage racks became a popular option and one which to this day remains polarizing.

1963 Corvette Coupe. This was one of GM's official publicity stills and one can see why the decision was taken not to include a trunk lid but the absence enhanced structural integrity and it was this Chevrolet chose to emphasize.

For 1963, unusually, the big news wasn’t what was under the hood (bonnet).  The 327 V8 was carried over from 1962 but, other than the drive-train, it was a new car (later referred to as the C2, the 1953-1962 models now retrospectively dubbed the C1), offered for the first time as a coupé as well as the traditional convertible and with a revised frame which included independent rear suspension, a rarity at the time on US-built vehicles.  One quirk of the 1963 coupés was the split-window design of the rear glass.  A source of debate within Chevrolet, the anti-split faction eventually won and a single piece of glass was substituted in 1964 which of course rendered the 1963 cars instantly dated.  As a result, a small-scale industry sprung up offering owners the chance to update their look to that of the 1964's single piece of glass and many cars were converted.  That changed decades later when the unique feature of the 1963 car made it a much prized collectable and another small-scale industry briefly flourished converting them back and, whether true or urban myth, it’s said as many as 2% of the split-window coupés which now exist may be later models with a bit of judicious back-dating.  Chevrolet officially had no involvement in racing but understood the Corvette’s appeal to those who did and in 1963 offered Regular Production Option (RPO) Z06 which included an improved brake and suspension package.  Available only in conjunction with the 360 hp engine and a four-speed manual transmission, around two-hundred were built, most of them coupés.

1963 Chevrolet Corvette Grand Sports, Nassau Speed Week, December 1963.  The additional apertures on the rear facia were not for taillights but air-extraction ports to prevent the panel acting like a "parachute" which not only reduced speed but also induced lift, creating instability.

One aborted C2 project was the Grand Sport (GS) Corvette, a competition oriented model using an all-aluminum 377 cubic inch (6.2 litre) version of the small-block V-8 (making a reputed 550 hp) and a structure which had been subjected to an extensive weight-reduction programme.  It had been intended to build a run of 125 (some sources say 100 in competition trim with a further 25 as "road" versions with creature comforts) in order to homologate it in certain racing categories but GM, still (unlike its competitors) taking seriously the need to make it appear it was maintaining the industry's agreed ban on participation in motorsport, cancelled the programme after five (three coupés and two roadsters) had been built; all survived and are now multi-million dollar collectibles, something which has inspired the creation of a number of clones.  One quirk of the GS was the coupés were fitted with a one-piece rear window and so the three are the only 1963 Corvettes to leave the factory without the famous split-screen (which really was two separate pieces of glass).  The very presence of the split screen was the subject of a well-documented squabble within Chevrolet and ultimately, the design team prevailed with a single piece of glass appearing for the 1964 coupés. 

1965 Corvette 396 Convertible with hard-top, side exhaust pipes and Kelsey-Hayes cast aluminum wheels (still with knock-off hubs that year).

Although the Corvette had gained powerful, fuel-injected engines and an effective independent rear suspension, the drum brakes remained the package’s weak link.  In 1964 option J65 (US$53.80) bundled the power assistance (as stand-alone option J50 retailing at US$43.05) with sintered metallic linings for the brakes but while this improved the retardation and especially the propensity for performance to fade in sustained use, the combo couldn’t match what could be achieved with disk brakes.  Still, the motoring press commended option and it persuaded 4,780 buyers to tick the box.  At a hefty US$629.50 however then was option J56, described as “Special Sintered Metallic Brake Package” and that it was available only with a fuel-injected engine, a four-speed transmission and a Positraction rear end was an indication it was intended only for those who operated in “extreme conditions” (ie on race tracks).  Effective they certainly were but, noisy and with high pedal pressures, they were not suitable for street use and a scant 29 customers were tempted.  In what was an overdue upgrade, Chevrolet made four-wheel disc brakes standard for the 1965 model year although the drums remained available (as delete-option code J61) for anyone who wished to save a few dollars.  Those who opted to eschew the dramatic improvement in braking offered were probably specialists; because of internal friction the discs did impose a (very slight) performance and economy reduction which was why drums were long preferred on the NASCAR ovals where brakes are rarely applied and fractions of a second per lap can be the difference between winning and losing,  Only 316 Corvette buyers chose to save the US$64.50 and the disks definitely were a good idea if the newest engine was chosen.  Although developed by  Kelsey-Hayes, the brakes were manufactured for Chevrolet by Delco Moraine and included a pair of small drum brakes in the rear hubs to provide a parking brake, something difficult to engineer with disks.  Kelsey-Hayes also produced the optional aluminium wheels but at US$322.80 the take-up rate was low and many C2 Corvettes now are fitted with modern reproductions of the originals; the same applies to the side exhaust-pipes (a new option for 1965 at US$134.50), many more Corvettes now so equipped than the 759 which in 1965 left the factory. 

The distinctive "bent needles" were last used on the Corvette's instruments in 1964.

As a mid-year release in 1965, the big-block 396 cubic-inch (6.5 litre) V-8 became available and it was rated at 425 hp, a figure few doubted after seeing the performance figures.  Predictably, given the fuel-injected 327 was rated at 375 hp but cost US$538.00 against US$292.70 for the more muscular big-block, only 771 chose the former while 2157 opted for the 396 which must have seemed a bargain compared to the US$202.30 Chevrolet charged for the 36 (US) gallon (136 litre) fuel tank (available only for the coupé).  This cost-breakdown must be considered in the context of the Corvette's base price (US$4106.00 for the convertible and US$1321.00 for the coupé) and the air-conditioning ordered by only 2423 buyers (9.7%); at US$421.00 it increased the invoice by some 10%).  There were charms only the fuel-injected unit deliver but the customer is always right and before the year was out, the Rochester option was retired and it wouldn’t be until 1982, in the age of the micro-chip, that Chevrolet would again offer a fuel-injected Corvette.  Buyers clearly were convinced by the big-block idea but the sections of the motoring press were ambivalent, Car & Driver's (C&D) review suggesting that while "...there are many sports cars which really need more power, the Corvette isn’t one of them."  Unlike the chauvinistic English motoring press which tended to be a bit one-eyed about things like Jaguars and Aston-Martins, there were many in the US motoring media who really didn’t approve of American cars and wished they were more like Lancias.  People should be careful what they wish for.

1967 Corvette L88 convertible with side exhaust pipes and Kelsey-Hayes cast aluminum wheels (with five-stud hubs that year).

Maybe even Chevrolet had moments of doubt after reading their copy of C&D and thought the 396 Corvette might have been a bit much because after providing cars for the press to test, they issued a statement saying the 396 wouldn’t be available in the Corvette after all but would be offered in the intermediate Chevelle as well as the full-sized cars.  The moment however quickly passed, the 396 Corvette remaining on the books and by 1966 Chevrolet certainly agreed there was no substitute for cubic inches, the 396 replaced by a 427 cubic-inch (7.0 litre) iteration of the big-block.  For 1966 it was still rated at 425 hp but in 1967, a triple carburetor option sat atop the top engine, gaining an additional ten hp.  There was however another, barely advertised and rarely discussed because of its unsuitability for street use and this was the L88, conservatively rated at 430 hp but actually developing between 540-560.  Essentially a road-going version of the 427 used in the (unlimited displacement FIA Group 7 sports-car) Can-Am race series, just 20 were sold in 1967, the survivors among the most sought-after Corvettes, one selling at auction in 2014 for US$3.85 million.

By the 1960s it was common for hard-tops to be on the option list of a roadster (in the era there was even one company which briefly (and unsuccessfully) offered GRP versions for Detroit's full-size convertibles) but Chevrolet gave C2 Corvette buyers the choice to have both a hard-top & soft-top or just one of the two.  Remarkably (and presumably in places where rain events were predictable), a number of buyers did take the hard-top only course and the configuration wasn't unique to Chevrolet, Mercedes-Benz in some years offering its "Pagoda" roadster (W113; 1963-1971) with only a hard-top although it was listed a separate model: the "California Coupé" which, despite the name, was still a convertible and one which offered the additional practicality of a folding bench seat in the rear compartment, permitting (cramped) seating for two.   

Joe Biden (b 1942; US president 2021-2025) in his 1967 Corvette Convertible.

Given he was already 62 when Mean Girls was released in 2004, most assumed it must have been an intern who provided the intelligence (1) that October 3 is "Mean Girls Day" and (2) "Get in loser, we're going shopping" is a line waiting to be a meme.  Thus the tweet in 2022 although there was some subterfuge involved, the photograph actually from a session at his Wilmington, Delaware estate on July 16 2020.  The excuse for not taking a new snap probably was legitimate, the Secret Service most reluctant to let him behind the wheel (and they probably had many reasons to be worried).  The presidency is often called the most powerful office in the world but he's still not allowed to drive his own Corvette (all ex-presidents actually forbidden again to take the wheel on public roads) and George HW Bush (George XLI, 1924-2018; US president 1989-1993) encountered push-back when he refused to eat broccoli, apparently still scarred by the experience when young of having the green stuff forced on him by his mother.  He was far from the only head of state or government to have had unresolved issues with his mother.

President Biden's Corvette Sting Ray (it was two words in the C2 era) was ordered with the base version of the 327 rated at 300 hp, coupled to a four-speed manual gearbox.  For what most people did most of the time the combination of the base engine and the four-speed was ideal for street use although there were some who claimed the standard three-speed transmission was even more suited to the urban environment, the torque-spread of even the mildest of the V8s such that the driving experience didn't suffer and fewer gearchanges were required.  Those wanting the automatic option were restricted still to the old two-speed Powerguide, the newer Turbo-Hydramatic with an extra ratio simply too bulky to fit (some subsequently have modified their early cars with a Turbo-Hydramatic but they didn't have to organize the production line upon which thousands would be built).  The 1967 cars were actually an accident of history, the C3 (slated for release as a 1967 model) delayed (the issues said to be with with aerodynamics which in the those days meant spending time in the wind tunnel and on the test track, computer modelling of such things decades away) by one season.  Sales were thus down from 1966 as the new, swoopy body was much anticipated but the 1967 cars are now among the most coveted.

1967 Corvette 427-400 Tri-Power Convertible with Powerglide.

The original 1953 Corvette had used the two-speed Powerglide automatic transmission because Chevrolet at the time didn’t have available a suitable manual gearbox.  The company was however innovative in the implementation, the floor-shift mechanism being the first known instance of the location for an automatic’s lever and it protruded from the side of the housing, something which doubtless seemed exotic but was really a short-cut by the engineers because it meant they could use the existing take-up for the linkage (Chrysler as late as 1963 used the same arrangement 300J).  The configuration really didn’t detract much from the driving experience because the Powerglide was, by the standards of the era, quick-shifting (though with only two ratios such events were anyway rare) and efficient which, combined with the light weight of the GRP body, made the thing a match in performance for many, heavier, V8-powered cars.  Even after manual gearboxes were added to the option list (a three-speed in 1955 and a four-speed two year later), the Powerglide remained available although in a typical year it was chosen by some 10% of buyers and as more powerful engines appeared (some with dual four-barrel carburetors, some with fuel-injection), these were offered only with the manual gearbox and the preference of the buyers who preferred the automatic was always slanted to the least powerful.

1967 Corvette 427-390 Coupe with Powerglide and air-conditioning.

When the big-block 396 debuted in the Corvette in mid 1965, it was available only with the four-speed manual, a limitation continued when it was replaced for the next season by the 427.  Unexpectedly however, the Powerglide in 1967 appeared on the option list for both the 390 (four barrel) and 400 (3 x 2 barrel) horsepower iterations although the more powerful (which used solid valve lifters and had higher redlines), retained the manual-only restriction.  Demand for the big-block / Powerglide combination was subdued: of the 2324 1967 Corvettes ordered with the automatic gearbox, 1725 used the 300 HP 327 and only 599 the 427, 392 with the 390 HP version, 207 with the 400.  In an indication of Chevrolet’s expectations of the Corvette buyer profile attracted to the Powerglide, air-conditioning was available with both the 390 & 400 HP engines.  It was the last year the Powerglide would appear in the Corvette, the platform of the succeeding C3 designed to accommodate the physically larger Turbo-Hydramatic.  A more modern and much superior design, the availability of the new three-speed transmission was welcomed but the old two-speed did have the charm of being able to hit 90 mph (145 km/h) in first gear, something of genuine benefit to the drag racing crowd who to this day continue to prize the Powerglide for (1) its robustness and (2) the ability to complete a quarter-mile (402 m) run with only one gear change, slicing priceless fractions of a second from the ET (elapsed time).  One trend which began with the debut of the new transmission in the Corvette was the take-up rate in the sports car essentially doubled; in 1969 the Turbo-Hydramatic was chosen by some 20% of buyers and the not only would tat continue to rise by 1982 (its last year of production), the Corvette was automatic only and by then the lower power and torque ratings meant the Turbo-Hydramatic had been replaced by a unit which was more efficient (although, as some would discover, it was also less robust).  When the mid-engined C8 Corvette was released in 2020, there was no conventional manual gearbox available, that decision taken for the same reason Ferrari had discontinued use almost a decade earlier: the automatic out-performed the manual in every aspect.  Curiously, among the Ferrari crowd, the famous open-gate shifters never lost the appeal and the factory must have noted both the emergence of a small industry converting modern Ferraris to use a fully manual transmission and buyer feedback because in 2025 it was reported there may soon again be a Ferrari with a clutch pedal and gated shifter.    

Same L72 engine, different stickers: An very early one (left) with a "450 HP" sticker and a later build (right) with a "425 HP".  

Most fetishized by the Corvette collector community are (1) rare models, (2) rare options singularly or in combinations and (3) production line quirks, especially if accompanied by documents confirming it was done by the factory.  There were a few of all of these during the Corvette’s first two decades and some of them attract a premium which is why the things can sell for over US$3 million at auction.  Other quirks bring less but are still prized, including the handful of 1966 cars rated (sort of) at 450 hp.  The L72 version of the 427 cubic inch engine was initially listed as developing 450 hp @ 5800 rpm, something GM presumably felt compelled to do because the 396 had been sold with a 425 hp rating and the first few cars built included an air-cleaner sticker reflecting the higher number.  However, the L72 was quickly (apparently for all built after October 1965) re-stickered at 425 hp @ 5600 rpm although the only physical change was to the sticker, the engines otherwise identical.  Chrysler used the same trick when advertising the 426 Street Hemi at 425 hp despite much more power being developed at higher engine speeds and that reflected a trend which began in the mid-1960s to under-rate the advertised output of the most powerful engines, a response to the concerns already being expressed by safety campaigners, insurance companies and some politicians.  Later Corvettes would be rated at 435 hp and it wasn’t until the 1970 model year that Chevrolet would list a 450 hp option (the 454 cubic inch (7.4 litre) LS6) but that was exclusive to the intermediate Chevelle and it remains the highest advertised rating of the muscle car era.  GM did plan that year to release a LS7 Corvette rated at 465 hp, building at least one prototype and even printing the brochures but the universe had shifted and the project was stillborn.

1966 Corvette air cleaner decals from Auto Accessories of America.  
The part number for the 427/450 sticker is #37032.

So, all else being equal, an early-build 1966 Corvette with a 450 HP sticker on the air-cleaner should attract a premium but Chevrolet kept no records of which cars got them and with reproduction stickers available for under US$25, it's obvious some have been "backdated", thus the minimal after-market effect.  Nor is there any guarantee some later-build vehicles didn't receive the stickers at the factory so even the nominal October 1965 "cut-off" isn't regarded as iron-clad, many assembly lines at the time known to use up superseded parts just to clear the inventory.  Not easily replicated however was another rarity from 1966.  That year, only 66 buyers chose RPO N03 (the 36 gallon fuel tank).  Depending on the the engine/transmission combination and final-drive ratio chosen, a Corvette's fuel economy was rated usually between "bad" and "worse" so the "big tank option" did usefully increase the range but it was really aimed at those using their cars in endurance racing.


Kelsey-Hayes cast aluminum wheels for C2 Corvette, the knock off version (option code P48, 1963-1966, top) and the later five-stud (option code N89, 1967, bottom).  They were manufactured by Western Wheel Corporation (a division of Kelsey-Hayes).  The images of the centre-cap components (right) are not to scale.

Available as a factory option on C2 Corvettes between 1963-1967, the Kelsey-Hayes cast aluminum wheels remained visually similar throughout the run but there were several detail differences in finish and, in the final year, a major structural change.  No series production 1963 Corvettes appear to have been factory-fitted with the wheels though they were at the time used on some race-cars (with two rather than three-eared hubs) and some of Chevrolet’s pre-production (the so called “pilot cars”) had them; these were the vehicles used in for the photo-sessions for the original brochures where the wheels appear.  The 1963-1964 run used a natural aluminum finish between the fins with a chrome centre cone; in 1965 the color was changed to a charcoal grey metallic while in 1966 the cone received a brushed finish.  The wheels were attached with “knock off” hubs which gained their name from the use of a hammer to “knock them off” (and back on) when a wheel needed to be removed.  Chevrolet in the tool kit of Corvettes fitted with the wheels included a 2 lb mallet with a lead face & core because damage can result if a steel hammer or mallet is used.  Lead being soft, with repeated use the stuff can wear away and expose the steel cylinder within so periodically the device should be inspected.  The major change came for 1967 when thinner fins appeared and, as a consequence of newly imposed federal regulations, the knock off hubs were replaced with the more familiar five-stud securing arrangement.  In 1967, the option code for the wheels changed from P48 to N89 and, reflecting the lower cost of production entailed in the simpler construction, the price was reduced from US$316.00 to US$263.30 but that added some 6% to the base cost and they were fitted to only 720 of the 22940 (3.14%) 1967 Corvettes produced although many more now exist with reproductions.  The new centre caps came to be known as “Starbursts”.

Starburst sea anemone.

As a noun & verb, “starburst” widely has been used in slang and commerce but its origin is owed to astronomers of the 1830s and in the field it’s been used variously to describe (1) a violent explosion, or the pattern (likened to the shape of a star) supposed to be made by such an explosion and (2) a region of space or period of time (distinct concepts for this purpose) with an untypically or unexpectedly high rate of star formation.  In SF (science fiction), starbursts can be more exotic still and have described machines from light-speed propulsion engines to truly horrid doomsday weapons.  In typography, a starburst is a symbol similar in shape to an asterisk, but with either or both additional or extended rays and it’s used for a brand of fruit-flavored confectionery, the name implying the taste “explodes” in the mouth as one chews or sucks.  In corporate use, starburst is slang for the breaking up of a company (or unit of a company) into a number of distinct operations and in software it was in the early 1980s used as the brand name of an application suite (based around the Wordstar word-processor) which was (along with Electric Office) one of the first “office suites”, the model Microsoft would later adopt for its “Office” product which bundled, Word, Excel, the dreaded PowerPoint and such.  It was the name of a British made-portable surface-to-air missile (MANPADS) produced in the late twentieth century, in botany it’s a tropical flowering plant (Clerodendrum quadriloculare), the term applied also to a species of sea anemone in the family Actiniidae and, in human anatomy, certain cell types (based on their appearance).  In photography, the “starburst effect” refers to the diffraction spikes which radiate from sources of bright light.         

1969 Corvette L88.

The C2 Corvette had a short life of only five years and it would have been shorter still had not there been delays in the development of the C3 which went on sale in late 1967.  Dramatically styled, the C3 eventually debuted for the 1968 model year, the lines reminiscent of the Mako Shark II  (1965) concept car and the coupé included the novelty of removable roof panels.  Underneath the swoopy body, the C3 was essentially the same as the C2 except the old two-speed Powerglide was retired, the automatic option now whichever of the three-speed Turbo-Hydramatics suited the chosen engine.  The C3 also saw one of the early appearances of fibre-optic cables, used to provide an internal display so drivers could check the functionally of external lights and for 1969, the 327 was stroked to 350 cubic inches (5.7 litres), one of the surprisingly large number of changes which can make the 1968 Corvette something of a challenge for restorers, there being so many parts unique to that model-year.  Still available was the L88 and in the two seasons it was offered in the C3, 196 were sold (80 in 1968 and 116 in 1969) but even in its most successful year, the option represented only around .003% of annual production.

C3 Corvette production Count, 1968-1982.

A classic roadster, the C3 Chevrolet Corvette L88: Convertible with soft-top lowered (top left), convertible with hard-top in place (top right), convertible with soft-top erected (bottom left) and coupé (roof with two removable panels (T-top)) (bottom right).  The four vehicles in these images account for 2.040816% of the 196 C3 L88 Corvettes produced (80 in 1968; 116 in 1969) and the L88 count constitutes .000361% of total C3 production.196 C3 L88 Corvettes were produced (80 in 1968; 116 in 1969) and the L88 count constitutes .000361% of total C3 production.

Joan Didion (1934-2021) and cigarette with her Daytona Yellow (OEM code 984) 1969 Chevrolet Corvette Stingray (on the C2 Corvette (1963-1967) and in 1968 the spelling had been "Sting Ray”) The monochrome image was from a photo-session commissioned in 1970 by Life magazine and shot by staff photographer Julian Wasser (1933-2023), outside the house she was renting on Franklin Avenue in the Hollywood Hills.  To great acclaim, her first work of non-fiction, Slouching Towards Bethlehem (1968), had just been published.

Writing mostly, in one way or another, about “feelings”, Joan Didion’s work appealed mostly to a female readership but when photographs were published of her posing with her bright yellow Corvette, among men presumably she gained some “street cred” although that might have evaporated had they learned it was later traded for a Volvo; adding insult to injury, it was a Volvo station wagon with all that implies.  She was later interviewed about the apparent incongruity between owner and machine and acknowledged the strangeness, commenting: “I very definitely remember buying the Stingray because it was a crazy thing to do.  I bought it in Hollywood.”  Craziness and Hollywood were then of course synonymous and a C3 Corvette (1968-1982) really was the ideal symbol of the America about which Ms Didion wrote, being loud, flashy, rendered in plastic and flawed yet underpinned by a solid, well-engineered foundation; the notion of the former detracting from the latter was theme in in her essays on the American experience.

A 1969 Chevrolet Corvette Stingray in Daytona Yellow.

Disillusioned, melancholic and clinical, Ms Didion’s literary oeuvre suited the moment because while obviously political it was also spiritual, a critique of what she called “accidie” of the late 1960s, the moral torpor of those disappointed by what had followed the hope and optimism captured by “Camelot”, the White House of John Kennedy (JFK, 1917–1963; US president 1961-1963).  In retrospect Camelot was illusory but that of course made real the disillusionment of Lyndon Johnson (LBJ, 1908–1973; US president 1963-1969) leading the people not to a “great society” but to Vietnam.  Her essays were in the style of the “new journalism” and sometimes compared with those of her contemporary Susan Sontag (1933-2004) but the two differed in method, tone, ideological orientation and, debatably, expectation if not purpose.

Joan Didion with Corvette, another image from Julian Wasser’s 1970 photo-shoot.  The staging in this one is for feminists to ponder.

While a stretch to say that in trading-in the Corvette for a Volvo station wagon, Ms Didion was tracking the nation which had moved from Kennedy to Richard Nixon (1913-1994; US president 1969-1974), it’s too tempting not to make.  Of the Corvette, she used the phrase: “I gave up on it”, later recounting: “the dealer was baffled” but denied the change was related to moving after eight years from Malibu to leafy, up-market suburban Brentwood.  While she “…needed a new car because with the Corvette something was always wrong…” she “…didn’t need a Volvo station wagon” although did concede: “Maybe it was the idea of moving into Brentwood.”  She should have persevered because as many an owner of a C3 Corvette understands, the faults and flaws are just part of the brutish charm.  Whether the car still exists isn't known; while Corvette's have a higher than average survival rate, their use on drag strips & race tracks as well as their attractiveness to males aged 17-25 has meant not a few suffered misadventure.

Joan Didion with Corvette, rendered as oil on canvas with yellow filter.

The configuration of her car seems not anywhere documented but a reasonable guess is it likely was ordered with the (base) 300 horsepower (hp) version (ZQ3) of the 350 cubic inch (5.7 litre) small-block V8, coupled with the Turbo-Hydramatic 400 (TH400) (M40) three-speed automatic transmission (the lighter TH350 wouldn't be used until 1976 by which time power outputs had fallen so much the robustness of the TH400 was no longer required).  When scanning the option list, although things like the side-mounted exhaust system (N14) or the 430 hp versions (the iron-block L88 & all aluminium ZL1, the power ratings of what were barely-disguised race car engines deliberately understated, the true output between 540-560 hp) of the 427 cubic inch (7.0 litre) big-block V8 would not have tempted Ms Didion, she may have ticked the box for the leather trim (available in six colors and the photos do suggest black (402 (but if vinyl the code was ZQ4)), air conditioning (C60), power steering (N40), power brakes (J50), power windows (A31) or an AM-FM radio (U69 and available also (at extra cost) with stereo (U79)).  Given she later traded-in the Corvette on a Volvo station wagon, presumably the speed warning indicator (U15) would have been thought superfluous but, living in Malibu, the alarm system (UA6) might have caught her eye.    

1969 Corvette ZL1 Roadster.

Uniquely in 1969, there was one option more expensive than the L88, the RPO ZL1, sometimes described as “an all aluminium L88” but actually with a number of differences, some necessitated by the different metal while others were examples of normal product development.  Again the fruit of Chevrolet’s support for the Can-Am teams, the ZL1 was no more suited to street use than the L88 and at US$4,718.35 was three times as expensive.  In 1969, a basic Corvette listed at US$4,781 so if the ZL1 option box was ticked the price essentially doubled although beyond that temptations were few, like the L88, air conditioning, power steering, power brakes and even a radio not available.  It was thus unsurprising demand was muted and it's now accepted that of the seven built, only two were sold, the other five being for engineering and promotional purposes, these “factory mules” scrapped or re-purposed after their usefulness was over.  The yellow coupé last changed hands in October 1991 when it was sold in a government auction for US$300,000 (then a lot of money) after being seized by the DEA (Drug Enforcement Agency) and in January 2023, at auction, the orange roadster realized US$3.14 million.  The yellow ZL1 for years sat in the museum attached to Roger Judski's Corvette Centre in Florida (a hive of DEA activity) but it was on 15 April 2025 announced that after sixty years of service to the Corvette community, Mr Judski was retiring and the centre was closed.

1969 Corvette ZL1 Coupé in Daytona Yellow.

So the orthodox wisdom is there are two “real” ZL1s and an unknown number of faux versions (described variously as clones, replicas, tributes etc, none of these terms having an agreed definition and thus not useful as indications of the degree to which they emulate a factory original).  However, the “ultra” faction in the Corvette community maintains the yellow coupé is a genuine one-off and claim the orange roadster left the factory with an L88 engine and in that form it was raced, as well as when fitted with a ZL1.  The faction further notes the orange machine is an early-build vehicle reported to have closed chamber heads whereas the RPO ZL1s used open chambers.  The “moderate” faction continues to regard the count as two although nobody seems now to support the rumors which circulated for a few years indicating a third and even a fourth, the supposed “black roadster” later confirmed to be faux.  Given all that, the fact the orange car sold for over US$3 million in 2023 does suggest that were the yellow one to go on the block, a new record price would be likely.  Roger Judski (b 1947), owner of the yellow ZL1, was in the Corvette business for sixty years (1965-2025) and is as authoritative an expert on the breed as anyone: he belongs to the moderate faction which supports the orthodox count of two factory ZL1s.

1971 Corvette with RPO ZR2 LS6 454.  This is one of two convertibles, the other 10 1971 ZR2s being coupés.

The 1969 ZL1 and L88 however would prove to be peak C3 Corvette.  Times were changing and in 1970 it was the Chevelle which was offered with Chevrolet’s top big-block street engine, the now 454 cubic-inch (7.4 litre) LS6 rated at 450 hp, the industry’s highest (official) rating of the era; plans for a 465 hp LS7 Corvette were cancelled as insurance costs and the regulatory environment began to tighten around the high-powered monsters although serious horsepower remained available: while the LS5 454 was rated at 390 horsepower, the performance it delivered suggested it was perhaps a little healthier.  The Corvette highlight of the 1970s however came in 1971 with the availability of the RPO ZR2 for the LS6 engine, described in dealer sheets as the “RPO ZR2 Special Purpose LS6 Engine Package” and it can be regarded as a successor the L88, supplied with the Muncie M22 close-ratio (Rock-Crusher) four-speed manual transmission, transistorized ignition, a heavy-duty aluminum radiator (with shroud delete, a hint it really didn’t belong on the street), heavy-duty power disc brakes, F41 Special Suspension with specific springs, shocks and special front and rear sway bars.  Like the L88s, air-conditioning and a radio were not on the option list, neither much used on race-tracks.  Chevrolet built only a dozen ZR2 Corvettes (two of which were convertibles) in 1971, not because production deliberately was limited but because of the cost (the list price was a then substantial US$7.672.80) and their unsuitability for everyday use meant demand was subdued.  Although scheduled for 1970, industrial relations problems delayed production of the ZR2 until 1971 by which time stricter regulations had compelled cancellation of the LS7 454 so RPO ZR2 was re-purposed for the LS6, rated at a conservative 425 horsepower although this didn’t fool the insurance industry.  

800 cfm (cubic feet per minute) carburetor on 1970 Corvette LT1.

Lurking behind the thunder of the 454 however was the most charismatic of the small-block Corvettes since the days of the fuel-injected 283 & 327.  This was the 350 LT1, a high-revving mill very much in the tradition of the Camaro's 302 Z/28 (RPO Z28 picked up the slash when used as a model name) used in the (five litre (305 cubic inch) production car) Trans-Am series, which featured heavy-duty internals and high performance additions including solid valve lifters, forged pistons, an 11:1 compression ratio, four-bolt main bearing caps, a forged steel crank, a hi-lift camshaft, a baffled sump and a free-flowing induction and exhaust system.  In a echo of the days of Rochester fuel-injection, it was almost twice the price of a 454 but was a persuasive package and over a thousand were made.  Available only with a manual transmission, it lasted until 1972 and although the lowering of the compression ration meant power ratings dropped season-by-season (1970:370 HP; 1971:330 HP; 1972:255 HP), the 1972 number reflected the industry's change from quoting gross to nett horsepower so the reduction wasn't as dramatic as it might appear.  Although still fast by most standards, the 1972 cars were somewhat less potent, the compensation being that by reducing the redline to 5600 RPM (to stop the belt flying off the compressor), the LT1 could that year be ordered with air-conditioning.  Most desirable of the C3 LT1s were those ordered with the ZR1 package, fewer than 60 of which were delivered between 1970-1972.  The ZR1 options were focused not on additional horsepower but rendering the chassis better suited for use in competition, the target market those who wanted to participate in the racing series run by the SCCA (Sports Car Club of America).  Accordingly, what was included was a cold-air hood, a larger capacity cooling system (including a different shroud and fan optimized for high-speed operation), the famed Muncie M22 (rock crusher) four-speed manual transmission, electronic ignition, upgraded power brakes, stiffer shock-absorbers (dampers), springs and front & rear anti-roll (sway) bars.  Given the emphasis, choosing the ZR1 package meant that, like the big-block L88s & ZL1, the fitting of luxuries like air conditioning, the rear-window defroster, power steering, the fancy wheel covers, alarm system and a radio were precluded.  ZR1 buyers really did inhabit a niche market and the vehicles are now highly prized.

1980 Corvette (California model with LG4 305 V8) in Frost Beige (paint code 59) over Dark Doeskin leather (trim code 59C).  It looked the part, even if the engine and transmission were shared with station wagons.

The LT1 is fondly remembered but from then on it was mostly downhill for the C3 although in its last years its popularity reached new heights and it was one of GM's most profitable lines.  In 1975 both the convertible and the (by then much-detuned 454) big-block V8 were cancelled but tellingly, in what came to be called the "malaise era", the C3 enjoyed a long India summer, its performance stellar on the sales charts if not the track and, with no appetite for horsepower, Chevrolet devoted attention to creature comforts, seats and air-conditioning systems much improved.  A sort of nadir is attached to the 1980 models sold in Californian which, because of more stringent emission rules, were fitted only with an automatic transmission and the LG4 305 cubic inch (5.0 litre) engine found often in Impala station wagons and pick-up trucks although it managed to be a little brisker than the Blue Flame original.  The Californian 305 was claimed to generate 180 hp which was actually 15 more than the unfortunate 350 (L48) in the 1975 model (the optional L82 listed with 205 hp).  The method of calculating stated hp changed in 1972 from gross to nett so the earlier numbers should not directly be compared with the newer but there's no doubt the Corvettes after the early-1970s were making a lot less power than the tarmac-melting fire-breathers of a few years before and though things had improved by the early 1980s, it wasn't by much.  Both the tamest of the 1975 cars and the 1980 Californian 305 tend to be coupled as the least fondly remembered of the breed but, enjoying solid demand to the end, the C3 remained in production until 1982, the last sold the following year.  In fairness to the "malaise era" Corvettes, they should be compared not with an earlier era but with what else was on the market at the time and judged thus, the Corvette was one of the better performers and still offered much for the money.