heres what I know about the engine ( I have it all wrote down here)...71 340 original to the car. with a 484 cam, stock heads, and intake, headers, 750 holly carberator. oh and a shift kit, and 391 gears. This was all done to it when I found the car. It seems to run pretty good, ( fast ,at least for me) I will post more pic.s when I take some....