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The 1978 Silver Anniversary Edition Corvette was developed to offer consumers a “collectible” model that commemorated one of Corvette’s milestone production anniversaries (its twenty-fifth anniversary in this case) in a way that had ever been done previously with any Corvette model year that had come before it. The car was mechanically identical to 1978 counterparts.
The 638-hp, 6.2-liter supercharged V-8 LS9 engine features such niceties as titanium connecting rods and intake valves, a forged steel crankshaft, and a dry-sump oil system. The suspension has magnetorheological shocks that enabled Chevrolet engineers to use softer springs than in the conventionally damped Z06. Corvette's top dog model is no joke and an accomplished sports car that puts up a good fight against the world's best.
These Big Block cars would be the high-water mark of Corvette performance and refinement for the C2 series of cars. The 427/400hp L68 came standard from the factory with the Holley triple two-barrel carburetor arrangement called Tri-Power. Only 2101 Corvettes in 1967 received this rare engine option which was a $305.50 cost.