Third generation-C3 (1968–1982) Main article: Chevrolet Corvette (C3) Corvette Stingray Convertible The third bearing Corvette, blooming afterwards the Mako Shark II abstraction car, was alien for the 1968 archetypal year and was in assembly until 1982. C3 coupes featured the aboriginal use ofT-top disposable roof panels. It alien monikers that were afterwards revived, such as LT-1, ZR-1, and Collector Edition. In 1978, the Corvette's 25th ceremony was acclaimed with a two-tone Argent Ceremony Copy and an Indy Clip Car replica copy of the C3.
This was additionally the aboriginal time that a Corvette was acclimated as a Clip Car for the Indianapolis 500.  Engines and anatomy apparatus were mostly agitated over from the C2, but the anatomy and autogenous were new. The 350 cu in (5. 7 L) agent replaced the old 327 cu in (5. 36 L) as the abject agent in 1969, but ability remained at 300 bhp (224 kW). 1969 was the alone year for a C3 to optionally action either a branch installed ancillary bankrupt or accustomed rear avenue with chrome tips.
The all-aluminum ZL1 agent was additionally new for 1969; the appropriate big-block agent was listed at 430-hp (320 kW), but was appear to aftermath 560 hp (420 kW) and propelled a ZL1 through the 1/4 mile in 10. 89 seconds. There was an continued assembly run for the 1969 archetypal year due a diffuse activity strike, which meant sales were bottomward on the 1970 models, to 17,316. 1970 small-block ability ailing with the alternative aerial compression, high-revving LT-1 that produced 370 bhp (276 kW). The 427 big-block was continued to 454 cu in (7. 44 L) with a 390 bhp (291 kW) rating.
The ZR-1 appropriate amalgamation was an advantage accessible on the 1970 through 1972 archetypal years, and included the LT-1 agent accumulated with appropriate antagonism equipment. Alone 53 ZR-1's were built. 1973 Corvette Stingray Coupe In 1971, to board approved low-lead ammunition with lower anti-knock properties, the agent compression ratios were bargain which resulted in bargain ability ratings. The ability appraisement for the 350 cu in (5. 7 L) L48 abject agent decreased from 300 to 270 appliance and the alternative appropriate aerial achievement LT1 agent decreased from 370 to 330 horsepower.
The big-block LS6 454 was bargain from 450 to 425 bhp (317 kW), admitting it was not acclimated in Corvettes for 1970; it was acclimated in the Chevelle SS. For the 1972 archetypal year, GM confused to the SAE Net altitude which resulted in added reduced, but added realistic, ability ratings than the antecedent SAE Gross standard. Although the 1972 model's 350 cu in (5. 7 L) appliance was absolutely the aforementioned as that for the 1971 archetypal year, the lower net appliance numbers were acclimated instead of gross horsepower.
The L48 abject agent was now rated at 200 bhp (150 kW) and the alternative LT1 agent was now rated at 270 bhp (200 kW).  1974 models had the aftermost accurate bifold bankrupt arrangement that was alone on the 1975 models with the accession ofcatalytic converters acute the use of no-lead fuel. Agent ability decreased with the abject ZQ3 agent bearing 165 bhp (123 kW), the alternative L82's achievement 205 bhp (153 kW), while the 454 big-block agent was discontinued. Gradual ability increases afterwards 1975 ailing with the 1980 model's alternative L82 bearing 230 bhp (172 kW).
Styling afflicted cautiously throughout the bearing until 1978 for the car's 25th anniversary. The Sting Ray nameplate was not acclimated on the 1968 model, but Chevrolet still referred to the Corvette as a Sting Ray; however, the 1969 (through 1976) models acclimated the "Stingray" name as one word, afterwards the space. In 1970, the anatomy architecture was adapted including fender flares, and interiors were refined, which included redesigned seats. Due to government regulation, the 1973 Corvette's chrome advanced bonanza was afflicted to a 5-mile-per-hour (8 km/h)system with a urethane bonanza cover. 973 Corvettes are different in that sense, as they are the alone year area the advanced bonanza was polyurethane and the rear retained the chrome two-piece bonanza set. 1973 was additionally the aftermost year chrome bumpers were used. The alternative wire-spoked caster covers (left) were offered for the aftermost time in 1973. From 1974 advanced both the advanced and rear bumpers were polyurethane. 1974 Corvette Stingray Coupe In 1974, a 5-mile-per-hour (8 km/h) rear bonanza arrangement with a two-piece, cone-shaped urethane bonanza awning replaced the Kamm-tail and chrome bonanza blades, and akin the new advanced architecture from the antecedent year. 975 was the aftermost year for the convertible, (which did not acknowledgment for 11 years) and Dave McLellan succeeded Zora Arkus-Duntov as the Corvette's Chief Engineer. For the 1976 models the fiberglass attic was replaced with animate panels to accommodate aegis from the catalytic converter's aerial operating temperature. Stingray 15 archetypal years area the names Corvette, Sting Ray, and Stingray were synonymous. 1977 was aftermost year the tunneled roof analysis with vertical aback window was used, in accession covering seats were accessible at no added amount for the aboriginal time.
The atramentous exoteric blush alternate afterwards a six-year absence. The 1978 25th Ceremony archetypal alien the fastback bottle rear window and featured a new autogenous and dashboard. Corvette's 25th ceremony was acclaimed with the Indy 500 Clip Car bound copy and a Argent Ceremony archetypal featuring argent over gray lower anatomy paint. All 1979 models featured the antecedent year's clip car seats and offered the advanced and rear spoilers as alternative equipment. In 1980, the Corvette accustomed an integratedaerodynamic redesign that resulted in a cogent abridgement in drag.
After several years of weight increases, 1980 Corvettes were lighter as engineers akin both anatomy and anatomy weight.  In mid-1981, assembly confused from St. Louis, Missouri to Bowling Green, Kentucky, and several two-tone acrylic options were offered. The 1981 models were the aftermost accessible with a chiral chiral until able-bodied into the 1984 assembly run. In 1982, a fuel-injected agent returned, and a final C3 accolade Collectors Copy featured an exclusive, aperture rear window hatch.  1980–1982
1980 Corvette Coupe
In 1980, both advanced and rear bonanza covers were restyled with integrated aerodynamicspoilers that resulted in a cogent abridgement in annoyance and added radiator air flow. The awning was additionally restyled. The crossed-flag emblems abolished from the advanced fenders and were revised to a added continued appearance on the adenoids and ammunition door. L-82 emblems confused from the awning to the advanced fenders on cars ordered with the alternative aerial achievement engine. This was the afterpiece for the L-82, now bearing 230 hp (172 kW) but it could not be akin to a 4-speed, as the chiral gearbox was offered alone with the abject engine.
The speedometer in all cars apprehend to a best of 85 mph (137 km/h), allowable by a new and arguable federal law. Air conditioning became standard, as did the tilt-telescopic council column, ability windows, exoteric action mirrors, and the accessibility group. New was an alternative roof console carrier that would arise to the rear fastback deck.  Many weight-saving apparatus were alien including thinner anatomy panels and an aluminum Dana 44 IRS (Independent Rear Suspension) cogwheel and crossmember.
The new lighter assemblage replaced the arguably stronger casting adamant GM 10 bolt IRS differential. In band with added weight savings, the aluminum assimilation assorted associated with L-82 engines back 1978 was now installed in all cars. For the aboriginal time, due to California discharge considerations, a different agent appliance was installed in cars delivered to that accompaniment and was mandatory. This motor was a 305 cu in (5. 0 L) V8 engine rated at 180 hp (134 kW), adapted with new tubular stainless animate bankrupt manifolds, and akin to an automated transmission, additionally mandatory.
The carburetor and agitation timing were controlled by Chevrolet’s new Computer Command Ascendancy system. The abate displacement agent was not accessible in any alternative state. California buyers were accustomed $50 as alleviation but had to pay for the California emissions acceptance which was $250. For comparison, the L-48 350 cu in (5. 7 L) engine, accepted in the alternative 49 states, was rated at 190 hp (142 kW). The abject amount added four times during the archetypal year adopting the amount of the car by added than $1,200 to $14,345,24.
In 1981, there was alone one powerplant available, a 350 cu in (5. 7 L) agent that, like the L-48 abject agent the antecedent year, produced 190 hp (142 kW), but was now appointed the L81. The motor was certified in all states and accessible with chiral or automated transmissions. Chrome air cleaner lids and casting magnesium valve covers dressed up all engines. The stainless animate bankrupt manifolds and computer ascendancy arrangement alien on the 305 cu in (5. 0 L) California engines the antecedent year were now standard, as was an abetting electric agent cooling fan.
This, the aftermost C3 accessible with a chiral transmission, so equipped, had a appear 0-60 mph in 8. 1 seconds. This archetypal year was the aboriginal to use a artificial rear spring, now a Corvette trademark. The bounce adored thirty-six pounds, but was bound to abject suspensions with automated transmission. When able with Delco's new alternative ETR (Electronically Tuned Receiver) radio with agenda clock, the quartz analog apparatus console alarm was replaced with an oil temperature gauge. The casting aluminum wheels, alternative back ’76, were now ordered on 90 percent of the cars at a amount of $428. New options included a ability adjustable driver’s bench and ability alien alfresco mirrors.
In mid-1981 assembly confused from St. Louis, Missouri to Bowling Green, Kentucky, and several two-tone acrylic options were offered. 1982 Corvette Coupe 1982 saw the admission of the “Cross-Fire Injection” ammunition commitment system. This TBI (Throttle Anatomy Ammunition Injection) was not the blazon of ammunition bang installed ahead in some C1 and C2 Corvettes. It activated two burke bodies accumulated with Chevrolet’s computer ascendancy system. The agent produced 200 hp (149 kW) and was akin to a new four-speed automated chiral with torque converters bypass in the top three gears. Compared to the antecedent Turbo-Hydramatic 3-speed, the new 700-R4 chiral had a lower aboriginal and additional accessory for bigger low-end acceleration, and a fourth accessory overdrive that would abate agent RPM by 30 percent at artery canoeing speeds, consistent in bigger ammunition economy.
On the downside, the new chiral was not advised a able assemblage and accepted problematic. The final archetypal C3 Corvette's appear achievement numbers were 0-60 in 7. seconds-the quarter-mile in 16. 1 @ 85 mph (137 km/h). This was the aftermost year for 8-track band availability and new “cross-fire injection” emblems appeared on advanced fenders. Adenoids and ammunition aperture crossed-flags emblems afflicted to a added boxlike design. Chevrolet knew this would be the aftermost year of an absolute bearing of Corvettes and so actual the break by alms a Collector Copy with abstracted consecutive cardinal sequencing, silver-beige paint, different auto blooming afterwards the 1967 model's bolt-on alloys, and an applicable rear bear window.
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