so they are not the same but will usally bolt up, well all I have is a big block or I would use a small block. next thing I have a th400 trans, do they make mounts that work? the oil pan doesnt hang down at all I think it is a differnt pan.well at least I know it has been done. all I plan on doing to the motor is new gaskets and a aftermarket carb.last and not least is there any where I can get gears so I don't peel through all 3 gears. thanks