Quote:
Originally posted by MiracleMax
IMO unless you can measurably improve the performance of aftermarket heads (as in substantially increase low and mid-lift flow) without hurting velocity in the port its not worth the extra bucks to port them (provided they meet the airlfow capacity of the engine).
Almost the same with GT40P heads, they are top notch from the factory and if your gonna dump bucks into them for porting, might as well step up to an aftermarket head.
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I only paid about $150 for pocket porting and gasket matching from my machine shop. It was a few years ago but it was from an experienced head porter. Note I'm saying "pocket porting", not full competition porting of the entire port.
Rev
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'66 Coupe, 306, 350-375 HP, C-4, 13.07 e.t., 104.8 mph, 1/4 mi.
O.B.C. #2
'66 coupe