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Generation III Internal Engine 1997-2006 LS1 | LS6
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How many layers is this OEM HG (PN:12589226)

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Old 04-18-2016, 03:01 PM
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Default How many layers is this OEM HG (PN:12589226)
Seen these listed for ls1 and 5.3? Seems odd. Anyone know the bore? I'd like to have the fire ring sealing on the steel cyl sleeve instead of on my alum 5.3 deck.

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Old 04-18-2016, 05:06 PM
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summit lists 3.920" bore and .051" thick for that
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