422 dyno fail

4spdragtop said

I wonder if the heads were really ported?
I hope the OP is able to get #'s he is happy with, without swapping too many parts.

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There's porting and there's proper porting.
Heads in the wrong hands can be ruined.
I don't know what the op has for heads, but the big hp gain from an intake and carburetor change tells me it's wanting to breathe.