New Magnum heads for 347 with Flow data

What really matters is the A to B testing results off the same bench with the same operator.
X's 3! I don want a pissing contest or flow bech racing, just the facts. And that is what he got. That's what we get. This is a good thread on "How to" for the guy at home. I do not expect the heads he or someone else does to flow exactly the same numbers at anyone else's bench. The improvements he has made help the home guy and the CFM amount isn't the big important thing here but the improvements are. Showing gains. GthT is the important part.

If 10 CFM show up, great. Should I expect 10 at home? Bad expectation!