So I have to pull my heads to try to figure out if I have a blown head gasket. My question is, when reinstalling heads will I need to get new head bolts? Are they torque to yield bolts? Or can I reuse? Also are there any blind thread holes that I need to worry about? Its a gen 5 502..

the gen5 blocks have blind holes,they don,t go into the water jacket.i recomend useing new arp head bolts.they are not torque to yield.

Haven't met a 502 yet that didn't benifit from the arp head bolts ! And cleaning the 5 lbs of silt out of the bottom of the block cooling passages