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If it is flat and like from the factory.......none like the stocker. Other wise I hear people use a felpro with copper in it I think.
 

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I use a Mr. Gasket 653 it's an asbestos job and you need to retorque it 5 or 6 times after you heat cycle it, but you should be ok after that.
 

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felpro 1400 =$20.00CND
WHAT ABOUT THE COPPER HEADER FROM SUMMIT CATALOG ANY GOOD???

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go faster?spend more money!
 

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put some red high temp on it in a thin coat and bolt it down....let it sit over night, if possible.

Use a gasket and the bolts may not stay tight plus it can screw up the alignment with the crossover pipe and cause it to leak.

Factory had nothing there and did not leak.
 
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Discussion Starter · #7 ·
Ok now for the other end of the header. I bought the factory donuts, Part # 1262500 from GM. Does anybody no if this is the the right part? Seems a little big, never used this type of gasket. Any tricks that I need to no?
 

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you mean for the downpipe to turbo?
 
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Discussion Starter · #9 ·
I mean were the header attaches to the cross over pipe.Is there any special way the donut has to be installed?
 

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With the exception of after market tubular headers I only use exhaust manifold gaskets on vehicles with aluminum heads.
 
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