The 3rd Generation Corvette spanned the peak of the performance era and the depths of the 1970s. Its new shape came almost directly from the Mako Shark II show car, and there were both convertible and coupe versions, the latter now fitted with T-tops. Big blocks were available from 1968 to 1974, with output from 390-hp to 560-hp. The 350-ci small-blocks ranged from the 1970 LT1 at 370-hp (gross) to the 1975 L48 at 165-hp (net).
Major revisions for '73 and '77 altered body styling details and added creature comforts. 1968-1972 Corvettes offer the most performance and are the most collectible, and high-horsepower 1968-69 cars will cost well into six figures.