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Header gasket ?

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Old 04-19-2006, 08:02 PM
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Default Header gasket ?
I have a 99' Z28 I was needing to know what kind of header gaskets I would need for it the square ones round ones ......what????? Thanks for any info.
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Old 04-19-2006, 08:04 PM
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Go back to GM and get a set of manifold gaskets they are MLS stainless and fit up to a 1 3/4 header lick a glove. Also they are not that expensive.
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Old 04-19-2006, 08:11 PM
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Yea, just get new stock ones. I have had two different ls1 cars with LT's and used stock gaskets on both, worked great. I got mine from local dealer for $16 each. You can get them for less online if you want to wait for shipping.

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Old 04-19-2006, 08:11 PM
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Yup, stick with the stock GM replacements.
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Old 04-19-2006, 08:18 PM
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The part number is 12558573 and you will need two of them.
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Old 04-19-2006, 09:26 PM
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Can they be purchased from autozone??
Last edited by Formula_X; 04-20-2006 at 12:16 AM.
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Old 04-20-2006, 12:17 AM
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Or must they be purchased from a GM dealer?
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Old 04-20-2006, 02:45 AM
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GM dealer or SDPC who is a sponser on the right.
Last edited by stillremains; 04-20-2006 at 08:13 AM.
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Old 04-20-2006, 09:21 AM
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The gasket in question is made up of 3 pieces of stainless steel and pressed together at each end and in the middle. That is going to be your best bet for sealing your headers.
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