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Old 04-03-2009, 11:25 PM   #1
brent_cosenza
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Default Heads?
which are better the GT40 Iron or aluminum heads
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Old 08-22-2009, 09:21 AM   #2
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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!!!!!!!!!!!
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Old 09-01-2009, 06:18 AM   #3
88windsor
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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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