Kammala jumla mai zuwa: Ferrari na farko 1966 mota ya kunshi wani 3.3-lita V12 engine da aka dauka daga Ferrari 275P2 wasanni mota prototypes, modified zuwa 3000cc, da kuma saka a baya na wani F1 shasi. Sunan "312", wanda za a yi amfani da shi don wasu motoci na baya, ya nuna "3" -litta, "12" -cylinder engine. Injin ya kasance mai nauyi, kuma saboda rage ƙarfin, ƙasa da iko da musamman karfin juzu'i. John Surtees ya kori wannan kayan aiki ba tare da nasara ba a Monaco yayin da Lorenzo Bandini ya kori Ferrari Dino 2.4-litta V6. Surtees ya lashe tseren na biyu, da
1966 Belgian Grand Prix, hanyar da ke fifita iko tare da madaidaiciya madaidaiciya, amma zakara na 1964 ya tashi bayan jerin gwano tare da manajan Eugenio Dragoni. Batun ya kasance game da fifiko a cikin tsere, kamar yadda Ferrari ke fuskantar matsin lamba daga Ford a tseren motar motsa jiki, kuma an yi watsi da kokarin F1. Mike Parkes ya maye gurbin Surtees, wanda ya tafi Cooper wanda ya yi amfani da injunan Maserati, don kammala na biyu a gasar zakarun direbobi tare da wata nasara. Ga Ferrari, Ludovico Scarfiotti ya kuma lashe tseren, 1966 Grand Prix na Italiya a Monza wanda ya taimaka wa Ferrari ya gama na biyu a gasar zakarun Turai.