At the end of the 1940s, the single-seater Formula 2 category had a displacement limit of 2 litres while the Formula 1 series that would be used to dispute the world championship from 1950 used 1.5-litre litre supercharged and 4.5-litre naturally aspirated engines. Nonetheless the immediate post war period was characterised by cars of all shapes and displacements, so a Formula Libre category was used for races such as the 1949 Temporada Argentina.

Ferrari had readied an engine for these races which saw the Formula 1 compressor fitted to the Formula 2 engine thanks to the fact that the exterior dimensions and ancillaries of both engines were identical. The result was a powerful, reliable engine that was less highly-strung than the F1 one. Farina had both engines at his disposal in Argentina.

Type front, longitudinal 60° V12
Bore/stroke 60 x 58,8 mm
Unitary displacement 166,25 cc
Total displacement 1995,02 cc
Compression ratio 6,5 : 1
Maximum power 191 kW (260 hp) a 7000 rpm
Power per litre 130 hp/l
Maximum torque -
Valve actuation single overhead camshaft per bank, two valves per cylinder
Fuel feed single superchanger, single Weber 40 DO 3C carburettor
Ignition single spark plug per cylinder, two magnetos
Lubrication dry carter
Clutch multi-plate
Frame tubular steel
Front suspension independent, unequal-length wishbones, lower transverse leaf spring, Houdaille hydraulic shock absorbers, torsion bar
Rear suspension independent, swing axle half-shafts, radius arms, torsion bars, Houdaille hydraulic shock absorbers
Brakes drums
Transmission 5-speed + reverse
Steering worm and sector
Fuel tank capacity 130 litres
Front tyres 5.50 x 15
Rear tyres 6.25 x 16