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What do you like better about the prc heads over the tfs? Just curious
Just from what I am able to collect on the surface, it seems the 227's have a higher ceiling than the 220's. I could be wrong but the 227's have better flow numbers, they apparently can be milled to 61cc's or so with my cam, larger intake runner obviously, and I can pick them up with a hour or so drive. I have also had good luck with TSP for the most part.
Much past that I am not sure. The world record also speaks for itself, but thats about all I know. I'd like to know what to expect from them power wise. I know no one has a crystal ball but a ball park range so I can assign value to it.
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