LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Allen Bolts for Headers?

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Old Apr 20, 2009 | 08:52 AM
  #16  
Dave1980's Avatar
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Joined: Nov 2006
Posts: 869
From: Houston(clear lake)
Originally Posted by 96capricemgr
Do not fall for the "locking" bolts crap recommended above. Only reason header bolts come loose is the gasket compresses and they lose torque load at which point they can begin to back out. Thing is when the gasket compresses the only way it will continue to seal is if retightened. If you check and retighten header bolts a few times in the first couple weeks after intalling new gaskets the bolts will then stay tight long term without any gimicks needed.

Allen head will work, just get yourself a ball end one you can cut down and then turn it with a ratchet or wrench.

I am using 12point 3/8 and this is good by me, ARP makes some with a 5/16 12 point head which would leave even more tool room.
Yeah after I have been down the locking bolt route and this statment is true. If your bolts need re tightening the gasket is compressing. Just stay on top of them like mentioned above, and the gasket will eventually compress completely.

Also for the guy that mentioned percys aluminum gaskets, your right in your thinking. The gasket does not compress as much after the fact.

Last edited by Dave1980; Apr 20, 2009 at 09:19 AM.
Old Apr 20, 2009 | 04:47 PM
  #17  
caldercay's Avatar
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Joined: Jan 2008
Posts: 466
From: Cypress, TX
Stainless steel socket head bolts for me!

http://picasaweb.google.com/calder.c...32328402025650

I bought them at a commercial fastener shop.
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