On December
1992, General Motors' Corvette group secretly contracts with TDM, Inc. to build a test car of the 1997 Corvette, which was
officially called CERV-4 (Corvette Engineering Research Vehicle). Corvette directed the project, with Chevrolet paying for
it. General Motors management was not told about it, for fear of cancellation. It was unveiled by Corvette chief engineer
Dave Hill on 1993-5-3 at the General Motors Technical Center in Warren. The build cost was about US$1.2 million.
CERV IV was powered by a prototype, of 5.0 liters
and had an iron block and aluminum heads.
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