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Anti-Seize on head bolts?

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Old Mar 15, 2007 | 09:37 AM
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Default Anti-Seize on head bolts?
Doing head swap, using new GM head bolts, Should I apply anti-seize?

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Old Mar 15, 2007 | 09:41 AM
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I wouldn't think you would need it. Never heard of anyone using it and the how-to on LS1howto.com doesn't mention anything about it.
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Old Mar 15, 2007 | 11:20 AM
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No. Not in Service Manual.
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Old Mar 15, 2007 | 11:40 AM
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Originally Posted by vettenuts
No. Not in Service Manual.
Didn't think it was...I didn't recall seeing it anywhere...

Thanks for the confirmation though.
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Old Mar 15, 2007 | 12:28 PM
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Originally Posted by finallygot1
Doing head swap, using new GM head bolts, Should I apply anti-seize?

Thanks
They allready have some on them. Just make sure, extra sure that you clean your bolt holes in the block very well, no liquid and you need to grind one of the old bolts on both sides of the threads to clean remaining sealant in the holes.

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Old Mar 15, 2007 | 12:35 PM
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Originally Posted by PREDATOR-Z
They allready have some on them.
No - they have thread-lock, not anti-sieze. The anti-sieze used on O2 sensors and spark plugs should not be applied to head bolts.
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Old Mar 15, 2007 | 12:39 PM
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From: BFE
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Correct that is what I meant, I read it fast, my apology.

The GM bolts are stretch bolts so you want them to grab, anti-seize will defeat that purpose.
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