For the 1966 Formula One season with new rules, the Ferrari 312 of Surtees consisted of a 3.0 L version of the 3.3 L V12 which they had previously used in Ferrari P sports car racers, mounted in the back of a rather heavy F1 chassis. Bandini drove a Tasman Series 2.4 L V6 car early in the season. Surtees won one race, the 1966 Belgian Grand Prix, but departed after a row with manager Eugenio Dragoni; he was replaced by Mike Parkes. Scarfiotti also won a race, the 1966 Italian Grand Prix at Monza, with an improved 36-valve engine.