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 cc).
 Output was now 210–230 PS (154–169 kW; 207–227 hp).
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 2498 cc of displacement.
 The F1 car, with 13:1 compression and two Weber 50DCOA/3 carburettors, pumped 260 PS (191 kW; 256 hp) 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 (2498 cc) unit in the 1953 625 TF.
 The aluminium engine produced 220 PS (162 kW; 217 hp) 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 42DCOA/3, output remained the same at 220 PS, which was enough for a third place at Le Mans.

Applications:
100 by 79.5 mm (3.9 by 3.1 in)
1954 Ferrari 553 F1
1955 Ferrari 555 F1
94 by 90 mm (3.7 by 3.5 in)
1951 Ferrari 625 F1
1953 Ferrari 625 TF
1956 Ferrari 625 LM
1957 Ferrari 625 TRC
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 cc).  Output was now 210–230 PS (154–169 kW; 207–227 hp). 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 2498 cc of displacement.  The F1 car, with 13:1 compression and two Weber 50DCOA/3 carburettors, pumped 260 PS (191 kW; 256 hp) 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 (2498 cc) unit in the 1953 625 TF.  The aluminium engine produced 220 PS (162 kW; 217 hp) 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 42DCOA/3, output remained the same at 220 PS, which was enough for a third place at Le Mans.
Applications:
100 by 79.5 mm (3.9 by 3.1 in)
1954 Ferrari 553 F1
1955 Ferrari 555 F1
94 by 90 mm (3.7 by 3.5 in)
1951 Ferrari 625 F1
1953 Ferrari 625 TF
1956 Ferrari 625 LM
1957 Ferrari 625 TRC
Ferrari Lampredi engine