I looked at Eaton's site and read his test of alum. heads. He said his dyno mule's pistons are .025" in the hole and that he used Best gaskets...he doesn't mention quench or detonation in the real world (street).
If the Mummert heads the have 60cc chambers as mentioned in the article, I believe replacing my 68cc G heads and using shim gaskets would give me more compression than I want or need with my 228* @.050" cam. I'm worried about pinging/detonation with thicker gaskets.
There was also an issue with push rod  alignment. Two rocker stands had to be milled to correct it.
 Is ANYONE running these heads who could offer some information?

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