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The Chevrolet Corvette is a line of American two-door, ... (a feature that later reappeared on the 1971 "Boattail" Buick Riviera) with, ... The LS5 454 cu in (7.4 L ...
1971 Corvette Stingray ZR2 Convertible. The ZR1 special engine package was a $1,221.00 option available exclusively with the LT1 engine option. 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 ...
In 1971, the LS-5 produced 365 hp (272 kW) and 550 lb⋅ft (746 N⋅m), and the LS-6 option came in at 425 hp (317 kW) and 575 lb⋅ft (780 N⋅m). In 1972, only the LS-5 remained, when SAE net power ratings and the move towards emission compliance resulted in a temporary output decline, due to lowered compression, to about 270 hp (201 kW) and ...
The power requirements for the Corvette were satisfied by simply increasing engine displacement. [31] Current General Motors chief engineer for small-blocks Jake Lee also stated that switching to overhead camshafts would also increase the height of the engine by 4 in (102 mm), rendering it too tall to fit under the hood of the Corvette. [32]
ZR1, (or ZR-1), is a designation that has been used on several different generational models of the Chevrolet Corvette. For the 3rd generation (C3), the ZR1 & ZR2 were special engine packages. Only 53 of these packages were optioned during the 1970 to 1972 model years.
The L78 was a Big-Block engine produced by Chevrolet between 1965 and 1970. Rated at 425 hp (317 kW) for its first year, the rating dropped to 375 hp (280 kW) in subsequent years (although there was no change in power).