Maybe an other head producer in the game.

I don't have a flow sheet. I have a dyno sheet. But it was on pump gas and with a smaller camshaft. It has a Crower 31409 cam in it now. We also put a stainless steel top ring in it when we switched to alcohol as a fuel.

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Was that cam .623 with 1.5 rockers? Or you had 1.6s?