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

Permatex thread sealant & assembly lube for bolts - head install..

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Old Feb 21, 2006 | 03:59 PM
  #1  
Javier97Z28's Avatar
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Permatex thread sealant & assembly lube for bolts - head install..

Instead of messing with ordering the ARP stuff, can I just use the permatex thread sealant that I can get locally?

Also, any moly lube will be good enough to slide under the head bolts correct? I'd rather not pay $17 for a tub of ARP stuff.. but I will if I have to.

Last ?, I don't recall using this in any other installs, but do the intake manifold bolts take any thread sealant?
Old Feb 21, 2006 | 04:38 PM
  #2  
fastchevy's Avatar
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Re: Permatex thread sealant & assembly lube for bolts - head install..

1. Yes
2. I've used motor oil or 3 in 1 household oil
3. Yes

Old Feb 21, 2006 | 07:48 PM
  #3  
BlackScreaminMachine's Avatar
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Re: Permatex thread sealant & assembly lube for bolts - head install..

Yeap I agree, when I did my one cyl head a few years ago I got a big tube of BLACK RTV from Permatex. I used it for all Head bolts and intake bolts.
Old Feb 21, 2006 | 09:05 PM
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Re: Permatex thread sealant & assembly lube for bolts - head install..

Make sure to get permatex #2 ,the non-hardening pliable sealant......never use RTV gasketmaker, the common kind for the intake end rails that turns into rubbery silicone.....on bolt threads, this can cause torque differences as well as being a nightmare to tap and clean the threads in the future......all, but the 4 corner LT-1 intake bolts are exposed to oil and need the permatex #2 sealant, many coat all of them, but it's not nesessary.........

Last edited by Joe B; Feb 21, 2006 at 09:09 PM.
Old Feb 21, 2006 | 09:51 PM
  #5  
atljar's Avatar
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Re: Permatex thread sealant & assembly lube for bolts - head install..

Ive always used Black RTV for head and intake bolts as my sealant at the recommendation of BES.
Old Feb 21, 2006 | 09:59 PM
  #6  
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Re: Permatex thread sealant & assembly lube for bolts - head install..

Originally Posted by Joe B
Make sure to get permatex #2 ,the non-hardening pliable sealant......
Ditto.
Old Feb 21, 2006 | 11:14 PM
  #7  
Javier97Z28's Avatar
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Re: Permatex thread sealant & assembly lube for bolts - head install..

Originally Posted by MachinistOne
Ditto.
thanks for the heads up

this the stuff?

http://www.permatex.com/auto/autouh....&item_no=56521

Last edited by Javier97Z28; Feb 21, 2006 at 11:17 PM.
Old Feb 21, 2006 | 11:31 PM
  #8  
Cmr0z28's Avatar
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Re: Permatex thread sealant & assembly lube for bolts - head install..

Want me to just bring mine? Or do you want to get a different one?
Old Feb 22, 2006 | 01:04 AM
  #9  
MachinistOne's Avatar
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Re: Permatex thread sealant & assembly lube for bolts - head install..

Originally Posted by Javier97Z28
thanks for the heads up

this the stuff?

http://www.permatex.com/auto/autouh....&item_no=56521

No.

http://www.permatex.com/products/ind...%202%20Sealant
Old Feb 22, 2006 | 12:33 PM
  #10  
Loadre's Avatar
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From: Kingsport, TN
Re: Permatex thread sealant & assembly lube for bolts - head install..

Yes.
Moly is Fine.
Yes.

With regards for using RTV. It is a NIGHTMARE to clean up if you get it in threads. Permatex non hardening sealant works fine and is super easy to clean relative to RTV.

Edit - I've used both types of those permatex sealants (#2 and the one javier posted) with no adverse effects. I prefer the one he posted actually.

Last edited by Loadre; Feb 22, 2006 at 12:35 PM.
Old Feb 22, 2006 | 12:49 PM
  #11  
TransAm396's Avatar
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Re: Permatex thread sealant & assembly lube for bolts - head install..

i used the hardening sealant for the rocker studs (since they will never need to come out) and im going to use the black sealant for the heads and intake.
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