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GM Header Gasket or Copper?

This is a discussion on GM Header Gasket or Copper? within the External Engine forums, part of the LSx Technical Help Section category; Got my Pacesetters today and they sent copper gaskets with them. Thought about usin the GM gaskets and if they ...

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    GM Header Gasket or Copper?

    Got my Pacesetters today and they sent copper gaskets with them. Thought about usin the GM gaskets and if they let go havin the copper ones for back up.

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    Veteran 0rion's Avatar
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    if you have the copper ones already though why not go ahead and use them? That's what I would do. Copper gaskets used to be the preferred gasket. The stock GM gaskets are a good cheap piece though.

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    I have copper and GM. I'm just a little leery about the copper ones though. I tried them on a Mustang before and for some reason couldn't get them to seal for nothin. Ended up usin Mr. Gasket and high temp silicone and never had a problem.

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    Veteran 0rion's Avatar
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    well, if I had both sets I would probably use the GM gaskets.

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    Just me Y2KPewterSS's Avatar
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    GM gaskets are good IMO. I would use though to be safe if you are unsure about the copper ones.
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    Went with the GM gaskets and prayed bout 50 times for no leaks and everything turned out great.
    Thanks

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    Member Sunset T/A's Avatar
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    I used NEW GM gaskets, even though the old ones only had 12,000 miles on them.
    Was told by many to use the old ones, if they were in good shape, but I figured I could afford new ones for $30.

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    anythings better than a notorious paper gasket ...

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    Senior Member 35thAnniZ28's Avatar
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    you know what? thats just the drivers side...i don't even wanna tackle the passengers yet without a friends help

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