in Formula Two. The aluminium engine produced with two Weber 45DOE carburettors, with power growing in 1953 to with two 50DCO carburettors. Its first outing was an Italian GP on 23 September 1951, won by Alberto Ascari. An entirely different 2.0 L four-cylinder appeared in 1953 in the 553 F2. This time, bore was and stroke was (2.9 in) for a total of 1,997.12 cc. Two Weber 50DCOA3 carbs produced . The original 1951 Formula Two, 2.0 L (1985 cc), engine was resurrected for the World Sportscar Championship in 1953 and the 500 Mondial. With lower compression and two Weber 45DCOA/3 carburettors, it produced . The same engine, now at , was used in the famous 500 TR. The "red head" cylinder head lent its name to the car, the first Testa Rossa. Another TR with this engine, the 1957 500 TRC, was produced to comply with new regulations from C-section of the International Sporting Code. This model was only raced by customers. Applications: 496.215 cc per cylinder 1951–1953 Ferrari 500 F2 1953 Ferrari 500 Mondial 1956 Ferrari 500 TR 1957 Ferrari 500 TRC 499.28 cc per cylinder 1953 Ferrari 553 F2 625 Ferrari 625 F1 was the first Formula One Ferrari car with an inline-4 engine. 94 mm (3.7 in) by 90 mm (3.5 in) dimensions were selected, for a total displacement of 2.5 L (2498.32 cc). Output was now . Car was not selected for competition at the start in favour of lower cylinder capacity 500 F2. It was first tested on 2 September 1951 in Bari. The 625 F1 car was reworked in late 1953 to become Ferrari's 1954 entrant as 553 F1. The engine was bored and stroked to 100 mm (3.9 in) by 79.5 mm (3.1 in) for a similar 2,497.56 cc of displacement. The F1 car, with 12:1 to 13:1 compression and two Weber 50DCOA/3 carburettors, pumped from this powerplant. The oversquare engine reappeared again in the 1955 555 F1 with exactly the same specifications. The first application of Lampredi's four-cylinder engine outside Formula One and Formula Two was this same 2.5 L (2,498.32 cc) unit in the 1953 625 TF. The aluminium engine produced with 2 Weber 50DCO4 carburettors. Although marked as TF the car never raced in Targa Florio. After the Le Mans disaster, the 2.5 L I4 was resurrected for the 1956 625 LM car. With different carburettors setup, two Weber