How fast was the 1967 Chaparral 2F? Competitive with F1 at Spa. It was several years before a Porsche 917K beat its fastest lap time. FIA once again conspired to keep the Americans from dominating what they felt was "their" sport, and banned engines over 5.0 liters for 1968. They also banned Chaparral's wing installation. In 1964, the FIA cancelled the last race of the GT series to prevent Americans from winning the championship, handing it to Ferrari.