318 Head Opinions

Just did a quick check on Summit.There is an .040 undersize rod bearing.So working on the assumption that some material has to come off the top side as well,suppose I assume a .015 increase in stroke with offset grinding.This brings the pistons up .015 as well,thus more compression.With stroke going to 3.463 and a .040 over bore on the block,cubic inches end up at....339.5 c.i,or a 340 if you like.

Now,using a Mr gasket head gasket with .028 crush thickness,4.14 bore,64 cc magnum chambers and pistons at .045 down in the bore,compression comes out at 9.78:1.With the right head work and cam,400+ ft/lbs of torque would be achievable.

Thats what Im shooting for.Lots of gut wrenching torque as I've got a fairly heavy cop car(3800lbs) to motivate,plus 2:94 sure grip out back.

Im looking at a comp cam dual energy grind.CRS 255 DEH-10.Might be kinda mild to you but the 1.6 rocker ratio gives a bit more lift(.471 .492)