Quote Originally Posted by Dave Severson
Other then the roller cam, not a lot of difference. Another thing that comes to mind is that on the EFI engines, the front timing cover has the mechanical fuel pump blocked off. Also, on the newer ones the dipstick tube is in the pan and not on the front cover.... Block and head dimensions are the same.
Are all parts interchangable? Could I use my block and install a newer rotating assembly,cam,and heads?