how much torque does a 454 big block have
Chevrolet Big-Block engine General Motors introduced EFI in 1987, which was found on GM 2500 and 3500 trucks. The 454 EFI version was rated from 230 hp (170 kW) to 255 hp (190 kW) and from 385 lb⋅ft (522 N⋅m) to 405 lb⋅ft (549 N⋅m) of torque. GMC continued to use the 454 EFI until the new Vortec 7400 version arrived in 1996.