Fwiw.... Just because a head is CNC ported and flows X amount doesn't guarentee it's a good port or even flows that CFM. We have seen some real crap CNC ported heads as of over the years. We've also seen some builds using these heads fall way short of their power goals.
Another thing, just because the guy selling the parts says it'll make X amount of power, it isn't a guarantee it will. In forty years I have NEVER gotten any power number from a knowledgeable cam guy and it took me several years to realize why.
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