Ferrari F 333 SP : Exactly 20 years after Ferrari last raced a sports prototype, the Maranello based firm surprised the world with the 333 SP in 1993. Jointly developed with Dallara, it was Ferrari's first new prototype racer in over two decades. Designed specifically for the new IMSA prototype regulations, the 333 SP was intended for customer racing only. The passion for the project started with dGiampiero Moretti, founder of MOMO and Gian Luigi Buitoni, president of Ferrari North America. The program was nick-named 'Il Sogno Americano', the American Dream.
IMSA regulations specified that the engine used could not displace over four litres and had to be derived from a road car. The V12 used was similar in design to Ferrari's contemporary Formula 1 engines, but it was homologated because it would power the upcoming Ferrari F50 road car. For the F50 the 3.5 litre F1 engine was increased in size to 4.7 litre and then reduced again for the 333 SP. All technical aspects, like the 5 valves per cylinder setup, were retained for both the F50 and 333 SP engine. Like many of its legendary predecessors the 333 SP was named after its engine's unitary displacement of 333 cc.
Much of the design work for the chassis and body was done in Dallara's windtunnel. Following the regulations, the 333 SP featured a flat bottom chassis. Carbonfibre and other composites were used for the chassis and body, resulting in a very light but rigid monocoque construction. Double wishbones and push-rod operated coil springs/dampers were used all-round. The rolling chassis was not much different from the contemporary F1 designs, except for the increased width to accomodate a 'passenger.'
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