Once the mid-engined format was abandoned, the Shinoda/Mitchell car was sent to Chevrolet Styling under David Holls, where Harry Haga's studio adapted it for production on the existing Stingray chassis.
The C3 also adopted the "sugar scoop" roof treatment with vertical back window from the mid-engined concept models designed by the Duntov group.
Included with coupes were hold down straps and a pair of vinyl bags to store the roof panels, and above the luggage area was a rear window stowage tray.
New options included a rear window defroster, anti-theft alarm system, bright metal wheel covers, and an AM-FM Stereo radio.
[3][4] The chassis was carried over from the second generation models, retaining the fully independent suspension (with minor revisions) and the four-wheel disc brake system.
Then there was the L88 engine that Chevrolet designed strictly for off-road use (racing), with a published rating of 430 hp (321 kW), but featured a high-capacity 4-barrel carb, aluminum heads, a unique air induction system, and an ultra-high compression ratio (12.5:1).
The large-engine Corvettes are extraordinarily fast and marginally civilized.” With January 1970 production, fender flares were designed into the body contours to reduce wheel-thrown debris damage.
The difference in machines is not as great as the disparity in price.”[14] A special ZR1 package added racing suspension, brakes, stabilizer bars, and other high performance components to LT1 cars.
Offered in ‘71 only was the LS6 454 cu in (7.4 L) big-block featuring aluminum heads and delivering 425 hp (317 kW), highest of the 1970-72 MYs, and could be ordered with an automatic transmission.
[19] This was the beginning of a trend where Chevrolet restricted certain power train choices to California buyers due to that state's practice of applying more stringent emission (smog) standards than mandated by federal regulations.
The new hydraulic lifter motor featured a forged steel crankshaft, running in a four-bolt main block, with special rods, impact extruded pistons, a higher lift camshaft, mated to special heads with larger valves running at a higher 9:1 compression, and included finned aluminum valve covers to help dissipate heat.
Hi-Performance Cars magazine in a L48, L82, and LS4 comparison test, September 1973, said: "Our choice for the all-around best performer must go to the base 350 L48 engine...The L48 delivers all the acceleration you'll ever need on the road in a steady, forceful manner...in addition it runs cool, idles smoothly, and can cruise all day at 100 mph (160 km/h).
Hot Rod magazine in its March 1986 issue selected the 1973-74 Corvette LS4 454 as one of the "10 most collectable muscle cars" in the company of the 1968-70 Chevelle, 1970 'Cuda, 1970 Challenger, 1966-67 Fairlane, 1968-70 AMX, 1970 Camaro Z28, 1968-70 GTO, 1968–69 Charger, and 1967-68 Mustang.
As in previous years, a folding top came standard with roadsters and a body color or vinyl covered hardtop was optional at additional cost.
C&D said: "The Corvette feels highly competent with power-everything to help you guide the long body around..."[33] 1976 models featured steel floor panels shielding the catalytic converter exhaust.
C&D summarized: "The Corvette was a big hit–we expected and thoroughly enjoyed that–but we were surprised at how well it withstood the ordeal...once we recovered from the trip we conceded that we'd developed new respect for a car we'd long regarded as something of a put on.
In every sense of the word, our Yukon Corvette proved to be tough and we'd have to say that even the production versions impressed us as coming closer to being real touring cars than we might ever have thought.
Windshield posts were now painted black for a “thin pillar” look and this was the final year of the "sugar scoop" tunneled roof-line and vertical back window.
The fixed-glass fastback benefited both aerodynamics and increased the usable luggage space behind the seats while improving rearward visibility in the bargain.
Redesigned interior door panels were also new as well as an actual glove box was added in front of the passenger seat, replacing the map pockets of previous years.
[10] The optional convenience group, introduced the previous year, now included intermittent (delay) wipers, floor mats, and the passenger side vanity mirror was an upgraded illuminated unit.
6,502 Indy 500 Pace car replica editions were produced featuring Black/silver two-tone paint, front and rear spoilers, mirror-tint roof panels and contoured sport seats.
Three popular features introduced on the '78 pace car replicas made it into this year's production: the new bucket seats, the front and rear spoiler package, and the glass roof panels.
[40] In 1980, both front and rear bumper covers were restyled with brand new integrated aerodynamic spoilers that resulted in a significant reduction in drag and increased radiator air flow.
[41] Many weight-saving components were introduced including thinner body panels and an aluminum Dana 44 IRS (Independent Rear Suspension) differential and crossmember.
This motor was a 305 cu in (5.0 L) V8 engine rated at 180 hp (134 kW), fitted with new tubular 409 stainless steel exhaust manifolds that were far lighter than the cast iron pieces they replaced, and mated to an automatic transmission, also mandatory.
In 1982, Chevrolet knew this would be the last year of an entire generation of Corvettes and so commemorated the occasion by offering a Collector Edition with separate serial number sequencing, silver-beige paint, unique wheels patterned after the 1967 model's bolt-on alloys, and an operable rear hatch window.
[43] In 1969, General Motors leased three special edition Corvette Stingrays for astronauts Pete Conrad, Richard F. Gordon, Jr., and Alan Bean of the Apollo 12 mission.
It included the solid-lifter small-block engine, heavy-duty four-speed transmission, power brakes, aluminum radiator, and a revised suspension with special springs, shocks, stabilizer bar, and spindle-strut shafts.
Its main distinction was black over silver metallic with a bright red pinstripe in between with a spoiler added to each end to alter appearance more dramatically.