The 3100 SFI V-6 engine is a 3.1 liter V-6 engine produced by General Motors from 1985 to 2005. It was used in various vehicles including the Chevrolet Corsica, Beretta, Camaro, and Lumina; the Pontiac Grand Am, Sunbird, and Firebird; and the Oldsmobile Calais and Cutlass.