The 275 F1 made its debut at the Grand Prix of Belgium on June 18, sporting the same 3.3-litre (3322 cc/202 in³) version of Lampredi's new engine. With three Weber 42DCF carburetors, a single overhead camshaft for each bank of cylinders, and two valves per cylinder, the engine produced a capable 300 hp (224 kW) at 7200 rpm. Alberto Ascari drove the car to fifth place, marking the end of the 3.3-litre engine.