C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Valve cover gaskets part number?

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Old Sep 22, 2003 | 04:35 PM
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Default Valve cover gaskets part number?

hey guys, i know i have posted a lot of questions lately but i havent had internet in a while and questions keep building up i my mind. as i posted not to long ago i need to replace my valve cover gaskets as i have a small leak in one of them. my question is twofold. the previous owner before was an old guy that was the origanal owner and only drove the car on the highways and never ragged the car out(pushed it to hard) now i understand my car has a lot of miles (123k when i bought it) and the leak was already there and i have put quite a few miles on it since then but is it normal for LT4s to have leaky valve cover gaskets with such babied use?(like how he used it, not me! :blueangel: ) i am thinking maybe i should get some high performance race gaskets or something just to make sure this doesnt happen in the future. might as well pay the little extra money while i have them off. the second part of my question is this.i have heard the LT4s have over sized gaskets on most surfaces to help restrict flow to decrease power. is this true on the valve cover gaskets? if so what is the correct size part number? can i get the right size in a highperformance model? thanks in advance for helping me shine some light on this subject
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Old Sep 22, 2003 | 05:29 PM
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Default Re: Valve cover gaskets part number? (1996man)

Stock GM gasket#14088564 neoprene molded rocker cover gasket.
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Old Sep 22, 2003 | 05:41 PM
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Default Re: Valve cover gaskets part number? (vettmanlt4)

is that the one that is not as big? or is that one that is gonna overlap as well? if its stock i suppose its not any heavier duty ?


[Modified by 1996man, 12:40 AM 9/23/2003]


[Modified by 1996man, 12:42 AM 9/23/2003]
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Old Sep 22, 2003 | 07:58 PM
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Default Re: Valve cover gaskets part number? (1996man)

anybody know anything about the stock gaskets being bigger on the LT4?
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