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317 heads?

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Old Jul 29, 2011 | 08:28 PM
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Default 317 heads?
I see 317 heads for sale. What are 317 heads? Are they an improvement over stock '98 LS1 heads?
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Old Jul 29, 2011 | 08:34 PM
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Lower compression ratio heads from a 6.0 truck. Very similar to the 243/799 casting but a larger combustion chamber. 72cc - I believe
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Old Jul 30, 2011 | 03:50 AM
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A lot of guys run these heads with boost.
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