Quote Originally Posted by asite57 View Post
ive never done a top swap, i though you swaped over the l67 heads up and left the NA block. im just trying to get a better understanding not sound like i know what im talking about
The heads, in the mechanicale aspect are the same. Only thing different is the port for the injectors. So your Pushrods, lifters, open the valves just as far as they would with the N/A heads.