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Ls3 with 317 heads

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Old Oct 23, 2009 | 01:13 PM
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Default Ls3 with 317 heads

I am selling my 1999 LS1 which is a stock bottom end and 317's with 642 rwhp. It's been at that power level for about 3k miles and everything is great on it. But I recently picked a 04 Z06 and want to build it up.

I found a Ls3 Short block for $1200.00 complete with cranks/piston and rings. I figure I'll pick up about 30-40hp just do to the fact it is a bigger motor and would run the 317's again to lower the CR

I figure I'll be in the short block about $1800.00 by the time I buy oil pump,pan, chain and relector adapter.

What your guys feeling about how well it will hold up under the 11psi I am running now?
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Old Oct 24, 2009 | 10:41 AM
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While you got the pan off, I would swap out the rod bolts with some arp. Then I wouldn't be too nervous about the bottom end.
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