In 1950, after limited success with the supercharged 125 F1, Ferrari shifted to naturally aspirated engines, appointing Aurelio Lampredi as the new technical director to develop a new large-displacement V12 for racing. The first result was the experimental 275 S, with only two built, featuring a 3.3-litre V12 and based on the 166 MM. Both raced in the 1950 Mille Miglia but retired due to mechanical failures. The 275 F1 debuted at the Belgium Grand Prix on June 18, 1950, with the same 3.3-litre V12, producing 300 hp at 7200 rpm. Driven by Alberto Ascari, it finished fifth, marking the end of the 3.3-litre engine's use in Formula One.
Enzo's Legacy is an interactive timeline of all Ferrari models ever made.