Need some advice on some cylinder head gaskets
And with potential for 15 lbs of boost and only 4 head bolts per cylinder, o rings aren’t going to hurt anything. Sure, the super duty PT gaskets will hold with studs under normal conditions. But with boost and pump gas, you need added detonation resistance. You are correct in wanting to control the gasket bore size with the closed chamber magnum heads. Not for gasket strength, but for end gasses and hot spots. But if you can get a pair of the .093 copper titan gaskets, that’s the route I would go and get the heads cut for o rings. It’s somewhat radical (and expensive, to boot!) but another option is to get whatever gasket you can and have the head decks fly cut the gasket bore diameter by .060 deep. Basically a copy of the edelbrock 60179 340 head made for positive deck pistons. It’s just a shame parts availability has gotten so bad that you’d even have to consider that as an option…
And with potential for 15 lbs of boost and only 4 head bolts per cylinder, o rings aren’t going to hurt anything. Sure, the super duty PT gaskets will hold with studs under normal conditions. But with boost and pump gas, you need added detonation resistance. You are correct in wanting to control the gasket bore size with the closed chamber magnum heads. Not for gasket strength, but for end gasses and hot spots. But if you can get a pair of the .093 copper titan gaskets, that’s the route I would go and get the heads cut for o rings. It’s somewhat radical (and expensive, to boot!) but another option is to get whatever gasket you can and have the head decks fly cut the gasket bore diameter by .060 deep. Basically a copy of the edelbrock 60179 340 head made for positive deck pistons. It’s just a shame parts availability has gotten so bad that you’d even have to consider that as an option…
