![]() ![]() “A lot of things learned by Chevrolet in sports car racing have been applied to the motor, the valve train primarily.”ĭuring the first Grand-Am prototype era followed by the DPi cars, GM’s Chevy and Cadillac brands participated annually in the Rolex 24 at Daytona in addition to the Corvettes racing in the GT classes in IMSA and annually at Le Mans.Ī Cup engine generally falls in the 800-horsepower range for 500-mile races. ![]() “They had a think about how to make a motor designed to last 600 miles on Memorial Day weekend and make it last for 24 hours, or hopefully 3,000 miles” said John Doonan, president of IMSA and appointed the manager of the Garage 56 program by NASCAR chairman Jim France. ![]() Given that the Camaro has a sequential gearbox and a paddle shift, the iron block V8 is the biggest concern about finishing if the car stays on the track. ![]()
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