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Generation III Internal Engine 1997-2006 LS1 | LS6
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317 heads

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Old 04-07-2011, 12:55 AM
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Default 317 heads
Can the 317s be machined to accept 2.02 1.60 valves?
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Old 04-07-2011, 02:22 AM
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No I'm fairly certain they won't. I would check around to make sure
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Old 04-07-2011, 09:15 PM
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I have 2.02 1.57 valves in mine. Not sure if it can take 1.6 though.
Last edited by Paul57; 04-08-2011 at 12:11 PM. Reason: 2.02
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Old 04-08-2011, 09:24 AM
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You can get the intake no problem. We put a bigger seat in the head to go to the 1.60" exhaust valve.

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