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Generation III Internal Engine 1997-2006 LS1 | LS6
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Old Sep 2, 2009 | 05:57 PM
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Default 243s
Basically, will the 243 heads off a 2006 gto, bolt right up in place of 2001 z28 heads
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Old Sep 2, 2009 | 06:02 PM
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Yes.... Mill them a little bit or run a thinner head gaskets for an extra bump in compression.
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Old Sep 2, 2009 | 06:05 PM
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I thought so, I was just making sure
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Old Sep 2, 2009 | 09:34 PM
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If you're keeping the stock cam, springs will be OK. But, change the springs if you go with a better cam. Also, change the pushrods no matter what. Stockers suck and might already be bent. Cheap insurance....
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