Mine were reused when they pulled the OEM manifolds off during the mocking up phase.

 

I would not use factory gaskets, the flange eyeballs a little on the thin side and I would be afraid of leaks. I would go get a quality copper gasket and pop the extra coin on stage 8 locking bolts. Unless you want to spend an hour re-tightening header bolts every few months until they rust on good and tight.

 

This. I would not trust an OEM gasket on a 22,000 mile car (in my case) with a new set of nice headers. Get some sturdy new metallic (copper) ones.

 

Have you made arrangements yet with Thorley to install your set yet?

 

I just called a parts store and ordered new exhaust manifold gaskets, the computer there didn't list anything for a 2008 Grand Prix GXP so I got them to look into an 2005 GXP.
Should be the same.

 

I wonder why this is taking so long...I can't wait!!

 

I just got my hopefully one and only set in just now. Very nice quality... Can't wait to put them on...

-Mike

 

They do not come with the gaskets

 

No sir, no gaskets. I am going to get some felpro gaskets from Summit or Jegs. They are absolutely beautiful though. They better be after costing me 1300.00....

-Mike

 

GM, uses steel shim exhaust manifold gaskets, which are very durable and reusable. They also maintain torque so replace them if you want too.

 

Was install that much?

 

I didn't install them yet. I was charged twice for one set. I am still in negotiations on getting my money back. Hell, if wasn't for bad luck I'd have none.

-Mike

 

Well ****. They must have charged mine to yours because I'm still waiting on them to take the money and ship them. I even called them again to confirm that they had the go ahead.

 

how much for the bolts and gaskets need part #s please and thanks

 

Any gaskets and bolts from summit for a LS motor will work fine.

 

Its comes with bolts.

 

It is very aggravating having to go through this crap. I need to pay rent in a few days...

Here are a few links for gaskets & bolts.

http://www.summitracing.com/search/?...0gaskets&dds=1

http://www.jegs.com/i/Mr.+Gasket/720/4805G/10002/-1

http://www.jegs.com/webapp/wcs/store...6+header+bolts

http://www.summitracing.com/search/?...%20bolts&dds=1

-Mike

 

Agreed. I was under the impression this stuff was included. It would have been nice to order this with the rest of my exhaust stuff so I could have used my $25 off cupon for summit. Oh well...

 

AG,

It isn't the extra stuff I need to buy that aggravates me it's that I was charged twice for one set of headers. It seems like every time I do something that is on the expensive side for my car something gets messed up. Honestly, that's the crap I am talking about. 25 bucks here or there is one thing, 650.00 is another...

-Mike

 

Mgpeagle Sorry for all the problems my friend