W2 Heads

DC 340 said

Hi rumblefish360. Thanks for those numbers, yea they look familiar-ish. : ) I have no idea what differences existed on the 2 benches. The "Evans" numbers were given to me when I bought the heads. The "Rob" numbers were done by a friend for me as he had access to a flow bench in a machine shop. I wasn't able to witness either setup. But I am glad to have some data since these were ported.

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No problem. I’m just glad to show what two bench operators come up with and part of the reason. The bigger the bore, the more the head or engine can intake from the head. I was shown & taught a few things from the second head flow operator who I know and trust for a long time now. His dad and him have been build winning engines for decades and he was taught how to port heads by Joe Modello.

I showed him the prior results and he was pretty sure they would be very close and the other persons numbers were accurate but may very differ if he also got the 4.125 plate on the bench. Having the same plate is not a guarantee of the same results.

The best part of it all was when I walked in he was excited to see me and said that these were really nice and I’ll have no problem making power for my goals. I didn’t say who ported the heads by he made the compliment of it being a really nice job with a smile on his face.

So I’m happy with them. I am disappointed in the head giving up the ghost on a port, which stopped any further porting efforts on the pair. I did want more cfm for the planned large stroker, but it wasn’t to be. It’s enough though.