Maybe an other head producer in the game.

I agree but I’d love to see a flow sheet.
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.

received_531262651452216.jpeg

received_2414674868678289.jpeg