Best Header Gasket for LT1

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Oct 16, 2006 | 10:01 AM

mack

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From: Easton, Md

Best Header Gasket for LT1

Tired of replacing these gaskets. I installed Split-Lock fasteners and their still blowing out. Whats the best gasket to use? Brand and part number please.

Oct 16, 2006 | 10:06 AM

Ray@Nitrous Outlet

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if you are having that much trouble with the gaskets blowing, check the flanges and head surface to make sure you are getting a good seal.

Also check the header bolts shortly often to make sure they are all tight and that they stay tight.

Oct 16, 2006 | 10:15 AM

DroppedM6Z

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yeah i'd have your flanges surfaced by a machine shop and then get you some ultra-seals. I used them on my PS-Lt's and not one problem...EVER!

Oct 16, 2006 | 10:33 AM

asudecat

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From: Plano, Tx

Percy's deal soft aluminum gasket from autozone. That's the best gasket as far as I know

Oct 16, 2006 | 11:00 AM

mack

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From: Easton, Md

Quote:

Originally Posted by Ray@Nitrous Outlet

Maybe that's what causing my issue. Not checking them enough. Didn't figure I'd have too since I have split-locks. They are loose and I have carbon deposits all over the EGR connection at the header and on the gasket itself. This has always been a problem area. Bad design IMO. I think there should be a bolt at the top and bottom of that connection. The side without the bolt, always leaks. I might try doubling the gasket at that connection and useing some RTV.

Oct 16, 2006 | 11:12 AM

juicedimpss

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i use no gasket. a thin bead of red rtv,and they stay sealed up.

Oct 16, 2006 | 11:20 AM

94z28L

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From: Colorado

i used mr. gasket ultraseals with my pacesetter longtubes, used these after the copperseals blew out been golden since

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Oct 16, 2006 | 06:14 PM

96capricemgr

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I only have a few hundred miles on them but sofar Earl's Pressure master are the best I have tried.

Far as not checking because you have good bolts, well it is not the bolts that loosen the gaskets compress first which can lead to bolts loosning but the bolt loosening is a symtom not a cause.