Impala SS Head Gaskets -

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Apr 24, 2007 | 09:36 PM

wheeljo2

Thread Starter

Burning Brakes

Joined: Mar 2001

Posts: 1,228

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From: Mansfield Texas

Impala SS Head Gaskets -

Anyone running these? I believe the thickness is 0.026", did you see an bump in compression or power?
Any water leakage issues?

Apr 24, 2007 | 09:52 PM

STL94LT1

Race Director

Joined: Jan 2002

Posts: 12,261

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From: O'Fallon Missouri

I've been running the Imp SS head gaskets for over 4 years without a problem. You should see about a 1/2 point compression jump over the stock gaskets.

Apr 24, 2007 | 10:11 PM

95wht6spd

Le Mans Master

Joined: Jul 2000

Posts: 7,634

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From: Greenville SC

I use them, no problems.

Apr 25, 2007 | 06:27 AM

Fastmax32168

Burning Brakes

Joined: Nov 2004

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From: Port Orange FL

Apr 25, 2007 | 07:23 AM

93 ragtop

Le Mans Master

Joined: Apr 2000

Posts: 5,713

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From: Manassas VA

I use them. I have had them on for about 3 years now. No problems. I was told they would take the compression from 10.4 to 10.6

Apr 25, 2007 | 07:48 AM

BlackC6LS3

Melting Slicks

Joined: Nov 2003

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From: South Amboy NJ

Little over 2 years and no problems.

Apr 25, 2007 | 10:53 AM

LT4POWR

Le Mans Master

Joined: Jul 2000

Posts: 5,012

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From: OKC OK

Quote:

Originally Posted by 95wht6spd

I use them, no problems.

same here

Apr 25, 2007 | 12:48 PM

rickneworleansla

Le Mans Master

Joined: Aug 2004

Posts: 5,141

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From: Metairie Louisiana

What is the quality of the head gaskets compared to Fel Pro. I have the Fel Pro now but LE (Head porter) suggests the Impala head gaskets. I'm guessing it is due to the thickness. If so does Fel Pro make some that are the same thickness as the Impala's? Is the quality the same? I already had the stock GM head gasket blow once. I'd rather not go through that again. I've ben told by many even the dealerships that our GM C4 head gaskets are garbage. Are the Impala gaskets the same material and quality as the stock C4 head gaskets?

Thanks

Last edited by rickneworleansla; Apr 25, 2007 at 04:26 PM.

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Apr 25, 2007 | 04:06 PM

89corvetteken

Instructor

Joined: Jan 2005

Posts: 197

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From: East Amherst New York

Is this Impala gasket the same one TPIS sells as their "thin" gasket and if so what is the GM part number?

Apr 25, 2007 | 04:10 PM

#10

STL94LT1

Race Director

Joined: Jan 2002

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From: O'Fallon Missouri

Quote:

Originally Posted by 89corvetteken

what is the GM part number?

GM part # 12553160

Apr 25, 2007 | 05:26 PM

#11

Corvette Kid

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From: Good health is merely the slowest possible rate at which one can die

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Quote:

Originally Posted by rickreeves1

The Impala's .029" and the performance Felpro is .039". By comparison the factory Corvette gasket is .049". If I remember right from using the calculator, it's nearly a .4 gain in SCR going from the .049" to the .029" gasket. I've used the Impala gasket a couple of times with no problems. When I built the stroker, I used the Felpro because it made my quench come out where I wanted it. Felpro also makes a standard stock replacement gasket and I don't know what the thickness of it is. The .039" gasket is an upgrade with modifications to the water passages that is said to improve cooling efficiency.

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