LT1 head gaskets - LS1LT1 Forum : LT1, LS1, Camaro, Firebird, Trans Am, Engine Tech Forums

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post #1 of 13 (permalink) Old 04-16-2017, 01:51 PM Thread Starter
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LT1 head gaskets

What do you guys think of the all copper head gaskets from JEGS? Both head gaskets had been leaking, all I'm doing is having heads checked, probably a valve job, and putting back together. But I dang sure don't wanna tear that apart again? Thoughts?
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post #2 of 13 (permalink) Old 04-16-2017, 02:46 PM Thread Starter
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The lifter valley was very clean. Happy about that. But every cylinder was loaded in antifreeze. And then I read somewhere to replace the gaskets that attach the crossover coolant tubes on the back of the heads? Does anyone know if those come in the head gasket kits?
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post #3 of 13 (permalink) Old 04-16-2017, 04:11 PM
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don't use copper head gaskets

Get these:

https://www.holley.com/products/gask...ts/parts/5716G

Chevy dealer will have the steam pipe gaskets. you need 2 per side

coolant can kill bearings....hopefully the head gasket problem didn't if the motor didn't run long that way
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post #4 of 13 (permalink) Old 04-16-2017, 07:11 PM Thread Starter
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Quote:
Originally Posted by BALLSS View Post
don't use copper head gaskets

Get these:

https://www.holley.com/products/gask...ts/parts/5716G

Chevy dealer will have the steam pipe gaskets. you need 2 per side

coolant can kill bearings....hopefully the head gasket problem didn't if the motor didn't run long that way
Are these thicker than some I've seen? Or what's the difference. Not questioning. Just really wanna make this last for daughter. Not positive how long it ran that way. Wasn't too terribly long.
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post #5 of 13 (permalink) Old 04-16-2017, 07:27 PM Thread Starter
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post #6 of 13 (permalink) Old 04-16-2017, 07:52 PM
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The Victor Reinz gaskets are identical to the MrG's and they're cheaper.

1995 LT1 Wagon. ERE 383
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post #7 of 13 (permalink) Old 04-16-2017, 09:21 PM
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Rockauto has felpro stuff for cheap

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post #8 of 13 (permalink) Old 04-16-2017, 10:53 PM
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Quote:
Originally Posted by Adrien95Lt1 View Post
Are these thicker than some I've seen? Or what's the difference. Not questioning. Just really wanna make this last for daughter. Not positive how long it ran that way. Wasn't too terribly long.
the Mr Gasket or Victor are .026 thick. This is thinner than the stock LT1 gasket which is .049 for aluminum heads. Many use the .026 for a little more compression. If your motor has been rebuilt and block and heads have been decked you should use whatever thickness the motor had

ARP bolts are very good

several places to buy this stuff. Summit or Jegs
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post #9 of 13 (permalink) Old 04-17-2017, 09:50 AM
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Like the factery GM type gasket on a stock lt1. I have done 2 jhead gasket job on stock Lt 1 had 206k on the motor that had not been touched and the other had 189k on an untouched motor
Matt
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post #10 of 13 (permalink) Old 04-18-2017, 05:46 PM Thread Starter
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What type of silicone or form a gasket do you guys recommend for the intake valleys.
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post #11 of 13 (permalink) Old 04-18-2017, 08:01 PM
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I jest used factery type Felpro and users silicone acrose the front and back of the block
Matt
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post #12 of 13 (permalink) Old 04-19-2017, 03:54 PM Thread Starter
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I just remembered I broke the sensor on driver side head, that is the coolant temp sensor isn't it?
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post #13 of 13 (permalink) Old 05-12-2017, 09:36 PM
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Quote:
Originally Posted by Adrien95Lt1 View Post
I just remembered I broke the sensor on driver side head, that is the coolant temp sensor isn't it?
Yes it is, permatex the right stuff is best for the valley make sure you put a thick bead on it

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