Need some gasket help! LT4/LT1?!?!
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Burning Brakes
Joined: Apr 2002
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From: MO
Need some gasket help! LT4/LT1?!?!
Ok I need to know what gasket are you guys running with LT4 Ported heads/intake?!?!? What is the part number. I have to remove my intake this weekend and need to get some ordered asap!
Also I need a head gasket I used the felpro .39 compressed size before and I am pretty sure that number is 1074. It says 4.125 bore however, all they all like that or does it matter if I am stock bore?!?!?
Thanks!
Also I need a head gasket I used the felpro .39 compressed size before and I am pretty sure that number is 1074. It says 4.125 bore however, all they all like that or does it matter if I am stock bore?!?!?
Thanks!
Le Mans Master
Joined: Oct 1999
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From: Sachse Texas
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Re: Need some gasket help! LT4/LT1?!?! (James94LT1)
I have run the 1074 gaskets before. I thought they were a 4.060 though, and not a 4.125. I have also run just stock head gaskets and I believe that is what I have installed at the moment.
As for the intake gasket, give Jeff Kopp a call and ask him for the updated LT4 intake gasket if you are running LT4 heads. His number is 800-728-8267.
As for the intake gasket, give Jeff Kopp a call and ask him for the updated LT4 intake gasket if you are running LT4 heads. His number is 800-728-8267.
Safety Car
Joined: Jun 1999
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From: Austin, Singapore, Kuala Lumpur, Houston, Dallas, Hong Kong, Elgin, etc.. Texas
Re: Need some gasket help! LT4/LT1?!?! (James94LT1)
The revised GM intake gasket for LT4 is p/n 12367777. Felpro makes a variety of sizes also.
Thread Starter
Burning Brakes
Joined: Apr 2002
Posts: 934
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From: MO
Re: Need some gasket help! LT4/LT1?!?! (Vette92)
Thanks guys,
Does it matter on the head gasket if I am running a stock bore still?
See I had a piston tap a valve from over lashed valves so I am going to pull that head and check for damage (hopefully the pushrod took it all) and if it is ok I want to reinstall it so I believe the head gasket I have on the other side is the 1074 already.
Thanks again!
Oh yeah I am running LT4 heads/intake
Does it matter on the head gasket if I am running a stock bore still?
See I had a piston tap a valve from over lashed valves so I am going to pull that head and check for damage (hopefully the pushrod took it all) and if it is ok I want to reinstall it so I believe the head gasket I have on the other side is the 1074 already.
Thanks again!
Oh yeah I am running LT4 heads/intake
Race Director
Joined: Jul 2000
Posts: 11,007
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From: Probably in the paint booth....
Re: Need some gasket help! LT4/LT1?!?! (James94LT1)
Copied from another group!
> Dave,
> Here are your choice of head gaskets for an LT1:
>
> 0.026" - Mr Gasket # 5716
> 0.029" - GM Impala SS # 12553160
> 0.039" - Fel-Pro FEL-1074
> 0.046" - Mr Gasket # 5715
> 0.049" - GM Camaro, LT4 # 10168457
>
> Which one is the right one for you? That's a religion question.
>
> FWIW I've run the 0.029" Impy gasket for over a year now (with 0.020" milled heads = 11.4:1 compression) Only had to replace the right side once
(coolant leak by #8.)
>
> Hope this helps,
> -Christian
******************
End quote! I'm using the Impy gaskets on mine. Best guesses is that I am around 11.5:1
Neal
> Dave,
> Here are your choice of head gaskets for an LT1:
>
> 0.026" - Mr Gasket # 5716
> 0.029" - GM Impala SS # 12553160
> 0.039" - Fel-Pro FEL-1074
> 0.046" - Mr Gasket # 5715
> 0.049" - GM Camaro, LT4 # 10168457
>
> Which one is the right one for you? That's a religion question.
>
> FWIW I've run the 0.029" Impy gasket for over a year now (with 0.020" milled heads = 11.4:1 compression) Only had to replace the right side once
(coolant leak by #8.)
>
> Hope this helps,
> -Christian
******************
End quote! I'm using the Impy gaskets on mine. Best guesses is that I am around 11.5:1
Neal
