Thread: 454 2bolt hi-po question

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valve stems/guides need oil and gets it past the seals---the seals keep exhaust and inlet mixture out of the crank case---so seals must let SOME oil past or soon the guides/stems wear and then they don't do anything-------------------------------

Originally Posted by jerry clayton

valve stems/guides need oil and gets it past the seals---the seals keep exhaust and inlet mixture out of the crank case---so seals must let SOME oil past or soon the guides/stems wear and then they don't do anything-------------------------------

Sorry Jerry, should have said "...keeps excessive oil from running down the valves...."

Hell, While I'm at it, I might get some blue marking ink, and a couple gaskets and port my heads properly on the intake and chamber, and possibly the exhaust ports too. The thought of doing that makes me nervous but it should be easy as long as I don't take off too much material. That should make the 402 breath better.. Any thoughts on that?

It's not hard to do some bowl blending and port match the intake to the heads. But unless you really know what you are doing, I would advise against going any further than just cleaning up the surfaces on the exhaust ports.