318 Head Opinions

Some people have said the swirl port heads flow as well, and with light porting can exceed them (the magnums, that is). I am looking for some 308's, myself. There are also issues with the rocker geometry, magnum's have 1.6:1 ratio, which translates to faster, higher lift. On an la block with a high lift cam I have read on the hughes engines website that the holes for the pushrods may have to be milled out in some cases. If you have access to magnum heads, they are newer, more efficient technology, quench style, heart shaped chambers and etc., right? and bigger valves, too, I'd run 'em if I had'em. Why not? Milling the heads requires custom pushrods, too. But if you don't mind spending money to do it nice, There is an air gap manifold for magnums, now, too. But you'd have to mill that, too. A change of piston would solve the chamber issue, but which is a better track, to change pistons, or mill heads, intake, and custom pushrods, or port other heads to flow like you want? What a mess, I haven't helped at all, have I? LOL