Its 340 (not original, was a slant car) with a 727 cheetah reverse manual valve body. The 340 is 30 over with w2 heads, a big cam (not sure of the size) solid lifters full roller valve train trw 10.5-1 pistons. Full MSD ignition, Demon Carb, electric fuel pump 12 gallon fuel cell. 456 gears out...