You need a clearance of .080 intake and .100 on the exhaust. No way your going to do it with head gaskets. You need to fly cut the pistons. If you have enough material.
^^^^^^^^^ and , if u do it w/ head gaskets , ur going to lose ur quench, making the engine need higher octane ----
Ur duration has a lot to do with the timing events in the engine too , like rrr said , tear it down , unless u got the cam timing way the heck off !
