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The L88 was a special option package developed under the direction of Zora Arkus-Duntov, director of GM’s performance division. First introduced in 1967, the L88 Corvette featured a highly modified version of Chevy’s 427-cubic-inch V-8 engine. Although this engine received a factory horsepower rating of 435, actual engine output was somewhere between 540 and 580 horsepower, giving the “stock” L88 enough power to run a quarter-mile in the high-11-second range!
Those that have laid eyes on the Astro I will not soon forget it. This 1967 Chevrolet prototype featured sleek body lines that embodied the feel of a far more aggressively styled Mako Shark. Although the Astro I was built with the intent to aid in the study of aerodynamics, no official documentation has been uncovered as to the results of this testing.
At Sebring in 1967, the Corvette L88 made its debut appearance. The L88 package included many competition components which included a M22 transmission, large disc brakes, upgraded suspension and an alumunim head 427. Shortly after the race, the L88 option would be offered on production cars which was a formidable package.
The L71 was Chevrolet’s most powerful engine in 1967 which replaced the big-block L71 from the previous year. Using it’s famous ‘Tri Power’ intake manifold was rated by the factory at 435 bhp. Costing $437.10, 3,754 Corvettes were made with the L71 options and they could not come with automatic transmissions nor air conditioning.
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.