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Old 03-19-2009, 12:01 PM   #1
TomH
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ls2 and ls3 piston to deck clearance

anyone know the piston to deck clearance on a stock LS2 and LS3 engine? I'm trying to calculate compression ratios.

thinking about putting an ls3 block into my gto w/ 317 heads.

Last edited by TomH; 03-19-2009 at 12:04 PM.
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Old 03-19-2009, 12:11 PM   #2
BubbaDuss
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a quick Google reveals that about .007 out of the hole more or less.

on a calculator that would be -.007


EDIT: I however, do not know the exact answer to your question, just trying to help out.
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Old 03-19-2009, 12:24 PM   #3
TomH
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I found .007 for an ls1 on google. wasn't sure if it changed for an ls2 and 3
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Old 03-19-2009, 12:28 PM   #4
Beach Goat
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Why change the heads on the LS3? It comes with bad ass heads, L92s.
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Valve shrouding on a stock motor is fine though, because ultimately you're just going to blow it up anyways, and then bore out the motor. Voila, valve unshrouded.

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Old 03-19-2009, 12:30 PM   #5
TomH
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I cant use an ls2 intake w/ an L92 head.
cost is a factor
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Old 03-19-2009, 12:31 PM   #6
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heads cost extra if all you did was buy the shortblock. that and you need to run the ls3/l76 intake manifold.
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Old 03-19-2009, 12:37 PM   #7
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dont some trucks use the l76 heads/intake? wonder if a wrecking yard might be a good place to find some...
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Old 03-19-2009, 12:40 PM   #8
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