GMPP Fast Burn Flow Potential

[Pontiac310]

Has anyone ever competitively ported a 23 Degree GMPP Fast Burn cylinder head? If so what sort of flow numbers are attainable and what minimum cross sectional area can be achieved at the pushrod pinch?

[SlowMalibu]

I have the same heads in stock form, I know it doesn't necessarily answer your question, but it's quite interesting

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