 The 275 was replaced at the Grand Prix of Nations at Geneva on July 30, 1950 by the 340 F1.As the name suggests, the car sported a larger 4.1-litre (4101.66 cc/250 in³) version of Lampredi's V12.Other changes included a new de Dion tube rear suspension based on that in the 166 F2 car and four-speed gearbox.