LT1-LT4 Modifications 1993-97 Gen II Small Block V8

blown head gaskets... upgrades???

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Old Aug 16, 2009 | 08:29 PM
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Default blown head gaskets... upgrades???

my head gaskets are done. leaking compression into the cooling system. I have heard that these motors are somewhat prone to this with the factory gaskets and head bolts. what gaskets and head bolts should i use. i have some ARP head bolts from a gen 1 motor, can i use these with the lt1 aluminum heads?
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Old Aug 16, 2009 | 08:42 PM
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I used some Felpro 1074's and had very good luck with them. Get the Heads milled while they are off.

Don't know about the Head Bolts.
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Old Aug 16, 2009 | 09:27 PM
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The head bolts will work, I've used the bolts and the studs for a SBC on my LT1/4, they are correct.
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Old Aug 16, 2009 | 09:28 PM
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Just make sure you know what type of bolts they are. Torque-to-yield or conventional.
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Old Aug 16, 2009 | 09:39 PM
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cool! thanks guys

My head bolts are conventional, also whats the torque spec?
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Old Aug 16, 2009 | 10:15 PM
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i suggest getting some arp head bolts imo i used gm head gaskets on mine goin good so far for me
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Old Aug 17, 2009 | 12:12 AM
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Originally Posted by the_merv
I used some Felpro 1074's and had very good luck with them. Get the Heads milled while they are off.

Don't know about the Head Bolts.
same gaskets here with no issues at all. my heads were also milled a tiny bit when i took them off
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Old Aug 17, 2009 | 07:59 AM
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They are good Gaskets.. I've been using the LS version with my current build.
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Old Aug 17, 2009 | 08:39 AM
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Nothing really wrong with LT1 head gaskets, if you popped one, there is a reason. When a head gasket blows, you can read them and see what caused it. How to build Lt1/4 is pretty good book, you may want to pick it up. They have the torque specs in there, I used that book more then I did the factory service manual.
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Old Aug 17, 2009 | 10:21 AM
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When you pull the radiator cap off how much air is being leaked into the system? Was it alot or just acouple bubbles here and there? Just curious for my own knowledge.
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Old Aug 17, 2009 | 08:32 PM
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the block would basically create a steam pocket and the radiator cap would release pressure and all the coolant.

this motor is in a off road race truck, the radiator is a dual core dual pass 31x19 ron davis with dual fans in the rear of the truck. i bought the motor with 160k miles for 500 bucks and ive put over 1500 race miles on it since. pretty damn reliable if you ask me!
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