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The engineers came up with a unit-body construction that relied on strength coming from the side sills of the chassis. These contained the exhaust which probably easily overheated the cockpit, especially in the coupe. Unfortunately, GM fitted fake V6 engines in both cars with a concept valve train that included dual overhead camshafts.
In 1956, Ed Cole, then General Manager of Chevrolet, decided Corvette could be saved from extinction due to lagging sales by promoting the car as a performance car which could be raced in production classes. The first of these Corvettes was to debut at Daytona Beach for acceleration and top end speed trials, the 12 hour race at Sebring, and also possibly Le Mans.
The Airbox option package designated RPO 579D came with the Duntov-cammed, Rochester fuel-injected 283/283 HP V-8. It incorporated a fiberglass intake plenum on the drivers-side inner fender. Fed by an opening in the radiator bulkhead, it channeled cooler, denser outside air through an internal filter and along a rubberized duct to the Rochester fuel-injection.