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brent_cosenza

04-03-2009 10:25 PM

Heads?

which are better the GT40 Iron or aluminum heads

331strokerstang

08-22-2009 08:21 AM

aluminum heads are always better unless you must run cast, i would always go with aluminum not just because of weight savings, but also the flow differences. that and if they a GT40-P heads they just flat SUCK!!!!!!!!!!!

88windsor

09-01-2009 05:18 AM

there are 3 different heads GT-40 Y303,GT-40p and the Gt-40x i prefer aluminum because of weight and better heat dissipation I think the GT-40x are the aluminum ones but not sure

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