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Old 08-02-2004, 01:35 PM
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deuce_454 deuce_454 is offline
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the best way to check engine type is to look up your castingnumber. im betting yours is a 12556110. its a 01 up 4-bolt, Gen.VII 8.1L, "Vortec 8100", Truck engine

im not sure if you can get performance heads for a gen 7. but mercruicer just came out with a performance big block based on that engine that put out about 425 Hp with gen 7 heads, 9:1 comp and a 5000 rpm marine cam, so dont dispare

Last edited by deuce_454; 08-02-2004 at 01:46 PM.
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