2001 Grand Prix Header install.
 

Here are some pics I took of installing headers on my friends Grand Prix GTP it was quite a learning experience.


This is the front manifold compared to the aftermarket header.
http://www.oldweakandpathetic.com/me...ixexhaust1.JPG

Stock exhaust, not to pretty to the eyes.
http://www.oldweakandpathetic.com/me...ixexhaust2.JPG
http://www.oldweakandpathetic.com/me...ixexhaust3.JPG
http://www.oldweakandpathetic.com/me...ixexhaust4.JPG
http://www.oldweakandpathetic.com/me...ixexhaust5.JPG

Engine with headers removed. Wasn't too bad of a job.
http://www.oldweakandpathetic.com/me...ixexhaust6.JPG

Headers installed.
http://www.oldweakandpathetic.com/me...ixexhaust7.JPG
http://www.oldweakandpathetic.com/me...ixexhaust8.JPG

Cutout and racing cat that will be installed, gotta love it, it will be emissions legal still.
http://www.oldweakandpathetic.com/me...ixexhaust9.JPG

More pics of the headers finally torqued fully.
http://www.oldweakandpathetic.com/me...xexhaust11.JPG
http://www.oldweakandpathetic.com/me...xexhaust12.JPG
http://www.oldweakandpathetic.com/me...xexhaust13.JPG

And even a video of it running with just the headers on, with the cutout open it sounds close to the same.

http://www.oldweakandpathetic.com/me...l/MOV03962.avi

We have a set of nice tips and flowmaster muffler that will be used, but we are fabricating our own custom 2 1/2" Y pipe setup.

is that an electric cutout? or the kind u have to reach under the car and pull open.

that be my car and its a cutout that u have to reach under to open.. i didnt want to mess with an electric one burning out on me.. figured only time it will be opened is at the track and ill have the car up to put some drag slicks on anyway..

I wouldnt bother with running dual mufflers again. (splitting it off to two outlets)

just run a single muffler if you think you can tolerate the sound.

you'll probably cost yourself a couple of HP and a bit of weight by going back with dual mufflers for no reason

Which headers are those?

The other guys brand.

OK. I'm debating on who's to put on mine. Biggest thing is fit, since my L67 isn't in a GP, but the Olds CS that I drive.

The other guys headers are pretty nice, they actually install pretty easy. Lining up the crossover pipe was kind of a pain and the egr passage tube was too big, so we had to cut slits in it and ram it in. If you ever need dimensions or pics feel free to ask. And the dipstick was impossible to mount so my dad fabricated a better designed bracket. The slp brand headers didn't look so pleasing to install due to the flex pipe is permanetely on the header. I wouldnt' see why they wouldnt' fit? Hell 99+ grand ams that people cram l67's in use headers...

Nice. I'd love to see similar pictures of the rest of the exhaust system going in; I like following your car modification "stories"