Maserati 6-cylinder F1 engine
Maserati made two naturally-aspirated, straight-6, racing engines, designed for Formula One; between and . The first engine was the 2.0-liter "A6G"; in accordance with the engine regulations imposed by the FIA. Their second and last engine was the "250 F1"; in accordance with the engine regulations imposed by the FIA for . Maserati A6GCM engine. The inline 6-cylinder two-liter engine with DOHC and 12 valves, 3 two-barrel (twin choke) Weber carburetors delivered to . It was developed by Alberto Massimino and Vittorio Bellentani. The engine was mated to a 4-speed gearbox . Maserati 250 F1 engine. The 250F principally used the SSG 220 bhp (@ 7400 rpm) 2.5-litre Maserati A6 straight-six engine. Maserati 300S sports car engine. The 3.0-liter (approx at 6200 rpm) engine used in the Maserati 300S was based on the Straight-6 design of the Maserati 250F and incorporated a lengthened stroke developed by Vittorio Bellentani to increase the capacity from the original 2.5-litres. The compression ratio was reduced from 12:1 to 9.5:1, partly due to the FIA regulations requiring the engine to be run on road car fuel. It used three Weber carburetors. Maserati 6-cylinder