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

Copper header gaskets

Old Aug 21, 2008 | 07:15 PM
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Default Copper header gaskets

Are copper header gaskets really good?I just bought a new set of pacesetter lts and they came with copper gaskets,I have always used fel-pro and have never had leaks on other small blocks.
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Old Aug 21, 2008 | 07:19 PM
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For sure..got copper on mine and they have sealed up great with no leaks.
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Old Aug 21, 2008 | 08:35 PM
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i bought fel pro copper gaskets before i received my mac mids which also came with copper gaskets. i used the fel pro but they were pretty much the same
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Old Aug 21, 2008 | 08:43 PM
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i used the ones that came with my mac mids and haven't had a problem for about 8k now.
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Old Aug 21, 2008 | 08:45 PM
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i also recommend using some like permatex copper create a gasket with them. it gets a nice stick to them and can be helpful on installation
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Old Aug 21, 2008 | 09:51 PM
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^+1 that copper gasket spray is good stuff, put it on two different cars with gaskets that came with the headers (bbk lt's and mac mid's)
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Old Aug 21, 2008 | 10:39 PM
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from my experience copper header gaskets really suck. 5 out of 8 cylinders leaked even after retorquing after heat cycles. I use Mr Gasket
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Old Aug 21, 2008 | 11:15 PM
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Never had much luck with paper.
Percy's aluminum worked well with the locking bolts ... at least for a while.
I think I'm going to try copper this time around.
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Old Aug 21, 2008 | 11:37 PM
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Stockers or Felpro, never had any problems with blow outs or anything...

I do use locking header bolts all the time though (even if its other people, I make them get em' ), that could also help...
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Old Aug 21, 2008 | 11:47 PM
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I've had the same copper gaskets that came with my Pacesetter lt's for about 15,000 miles now and still no leaks. Way better than paper imo.
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