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

89 head gaskets?

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Old Feb 25, 2025 | 09:53 PM
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Default 89 head gaskets?

I have an 89 l98 with the 113 aluminum heads. I need to change one of the head gaskets. I have read that the gasket thickness should be .051". I am measuring .032" with a feeler gauge between the head and block, in several different spots. The engine was rebuilt by the previous owner. Can yall recommend a head gasket? I want to have all parts ready before I tear it apart.
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Old Feb 25, 2025 | 10:16 PM
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Moved to C4 Tech for assistance.
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Old Feb 26, 2025 | 08:43 PM
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Welcome!!!
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Old Feb 27, 2025 | 12:30 AM
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Here's the head gasket kit that Felpro has available for the 86-91 L98 Vette.

https://www.summitracing.com/parts/f...xoCX4kQAvD_BwE

The kit comes with all the top end gaskets that are needed to replace both head gaskets. All for $104. Seems like a real bargain.
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Old Feb 27, 2025 | 06:45 AM
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Originally Posted by Leejewell
I have an 89 l98 with the 113 aluminum heads. I need to change one of the head gaskets. I have read that the gasket thickness should be .051". I am measuring .032" with a feeler gauge between the head and block, in several different spots. The engine was rebuilt by the previous owner. Can yall recommend a head gasket? I want to have all parts ready before I tear it apart.

Send the heads to a machine shop. Then you will know they are good. I did that, car runs like new.

Last edited by kenmohr; Feb 28, 2025 at 05:31 AM.
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