LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Best header gaskets???

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Old Oct 21, 2015 | 02:28 PM
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Default Best header gaskets???

I have a pair of long tube headers from eBay ( speed engineering ) , any gaskets anyone can recommend?? Thanks!

Last edited by mr_adaya; Oct 21, 2015 at 03:33 PM.
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Old Oct 21, 2015 | 02:37 PM
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http://catalog.remflex.com/

No leaks, no re torquing, no worries.
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Old Oct 21, 2015 | 03:06 PM
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Percy's 66031 Aluminum
No problems with them at all.
Had their carbon gaskets, aluminum are far better.
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Old Oct 21, 2015 | 03:16 PM
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Felpro, either 1470 or 1406. Going on 4 years with one set of 1470s with no leaks. The key is to make sure the header flange is flat, true it up with a file if need be.
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Old Oct 21, 2015 | 03:22 PM
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Cheap D-port Felpros
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Old Oct 21, 2015 | 03:22 PM
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Also using Percy's with no problems so far
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Old Oct 21, 2015 | 04:29 PM
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Guppymech, any tips on filing the header flange and checking for straightness? Not trying to thread hijack! Ive heard good things about Percy's.
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Old Oct 21, 2015 | 04:44 PM
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350, use the largest double cut file you have and just take a couple passes, if they're not true it will show right up. Your MACs are like my SLP headers with individual flanges. The two center ports on my SLPs were warped from welding and took a fair amount of filing to get them flat. Really makes a difference in how good they seal.
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Old Oct 21, 2015 | 05:31 PM
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Personally never had good luck with Percy's aluminum gaskets. went through three different pairs.. Felpros I have now are best I've used
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Old Oct 21, 2015 | 06:42 PM
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Felpro 1406
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Old Oct 21, 2015 | 09:02 PM
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Thanks everyone!
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Old Oct 24, 2015 | 01:25 PM
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I killed some Percy's years ago, if you have a bolt come loose or fall out they can cook really quickly.

I have a set of copper gaskets The Merv sent with the motor and headers he shipped me years ago (damn that was 9 YEARS ago ). Wish I had a part number, so far as I figure you can't kill them.
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