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Old 03-07-2013, 02:26 PM
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351w heads c9oe vs gt40

Just wondering if anyone knows the differace and witch would be better for my 351w build, i have the c9oe heads on there now, but found some gt40 heads down the street, for $100.00..
I have basicly stock bottom end, with a lumpy cam, edlbrock performer manifold, 750 dp, msd ignition, and open exhaust,,,
its in a boat,,,any thoughts would be great,,,,thanks

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Old 03-07-2013, 05:01 PM
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You would probably be better off keeping what you have or saving up for aftermarket aluminum heads,302/5.0 heads have 7/16" head bolts your 351W has 1/2" bolts so you would have to redrill the 5.0 heads whereas the aftermarket heads are always 1/2" so when using them on a 302/5.0 they require special head bolts or sleeves.
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