Exhaust layout

[simplyred]

Here is a pic layout for the 3.5 I'm sure the 3.9 can't be much different if the exhaust is single in dual out (is it??) Just thought it would be helpful!!

[LoJac963]

That will definitely help with those who have questions but haven't taken the time to look under their cars. Nice job simplyred.

[GTPGuy82]

And here's a list of each component in that image:

1. Converter and pipe right
2. Converter and pipe left
3. Gasket to manifold right
4. Gasket to manifold left
5. Gasket to left converter and pipe
6. Muffler and pipe base model
7. Muffler and pipe gasket
8. Muffler and pipe insulator
9. Front shield
10. Rear shield

[simplyred]

Thanks Mike, I was honestly to lazy to type all of that at the moment haha... so you GTP people out there... is the muffler simply a single in dual out setting??

[GTPGuy82]

I'm pretty sure it looks the same, just with another tip welded on the other side of the rear muffler.

[simplyred]

Thanks... that will come in handy if I decide to put duals on it. Not sure if I want to just go with a stocker in its place or put something like a flowmaster, magnaflow, dynamax, borla, etc.... have to figure it out!

[Maton 6]

i was wondering if anyone can tell me what size piping they used on our cars ( i have a gtp) i tried looking on the net but didnt find it.

although i didnt look to hard as i am very busy atm

i had a spin tech exhaust on my trans am and loved it. once i get the pipe size i will be ordering a spin tech muffler and new resonator prolly a dynamax one and will install it on the car and post a vid the same day if i can

anyone that can help me out please chime in so i can get started on this asap

[simplyred]

If Im not mistaken its 2.5, could be 2 but 2.5 is a pretty standard size on a 6cyl

[adrenaline_junkie75]

Unfortunately....a single in, dual out. I was hoping I had dual pipes, but NO headers go into one pipe.

[GTPGuy82]

You would be looking at minimal gains anyway if you went with a true dual setup. It might sound a little nicer, but you'd be adding even more weight to this already heavy vehicle by putting another pipe under there.

[adrenaline_junkie75]

AH! How true you are grasshopper! I just want the sound. lol

[LoJac963]

So we could buy a GTP exhaust with the GTP lower valence and have dual exhaust that easy?? Also I'm still waiting on someone to post sound clips of what their car sounds like (3.5) without the exhaust resonator.

[simplyred]

basically... thats what I was going to do then I started thinking that the GTP doesnt really have a distinct sound difference than the 3.5 does it??

[adrenaline_junkie75]

So we could buy a GTP exhaust with the GTP lower valence and have dual exhaust that easy?? Also I'm still waiting on someone to post sound clips of what their car sounds like (3.5) without the exhaust resonator.

It seems that way. Kinda messed up huh?

[simplyred]

minus the 3.9, thats why I went with a more base model. I wish GM would get a little more extream with "different trim levels" than just cheaply making them different. I bet that GTP muffler costs a mint from the dealership