My buddy just finished building a cleveland. And I currently in the middle of my ls2 build. All I'm missing is my heads and cam. He has a set of 4v cleveland heads that he said he would give me for a case of beer. Now I've been reading that LS1 heads will fit on a cleveland block. But will cleveland 4v heads fit on an LS block?? I know I'll have to have a custom cam since LS is ei/ei/ei/ei and the cleveland is ie/ie/ie/ie.. If this cleveland head on lsx block combo is possible what else would I have to have custom made?