Quote:
Originally Posted by HP HUNTER
A 461 X casting is a completely different port when compared to a 461 port.
A friend of mine just did a set of 461 X heads, with a 2.020 valve with just cutter work and rolling the short turn the head flowed 233 CFM, a 461 with the same work will never see that kind of flow.
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I have a set of 462's with 1.94 1.50 valves that flow better than that.