That won't help you. The heads will still lift with 10 bolts. . That's why the racing block is 18 bolt . But yes my other motor is 18 bolt as well and it will be o ringed . That motor will see 35 psi. If your using a stock block your looking for trouble. I wouldn't go past 700 hp. I'm looking for a lot more. My w8 motor should be 1800 or more.
