y87 exhaust and regular v6 exhaust size

[defrag]

Is the "dual exhaust" on the Y87 package the same piping size as the regular exhaust on the v6 f-body? (2.25 inch?)

[veesix]

yes, the only difference is that the y87 exaust has 2 outlets instead of 1

[defrag]

right thats what I thought, and is the piping size 2.25 inch?

[FirebirdGT]

<blockquote>quote:</font><hr>Originally posted by defrag:
right thats what I thought, and is the piping size 2.25 inch?<hr></blockquote>


Yes

[AKcamaro]

Do you get more power from the Y87? I have it on mine and know it looks and sounds good.

[Guardsman]

Chevy doesn't list a power increase from the Y87 exhaust, and I think it's more cosmetic than functional. Just by virtue of the fact that it has two outlets rather than one, it should help a bit.
One thing you could look into, if you want, is getting ahold of an exhaust from a Z28/TA or SS/WS6.
Cale did that on his, and I will be doing it on mine. Cale said that it sounds really good, and that he got a boost in power from it.

[veesix]

<blockquote>quote:</font><hr>Originally posted by Guardsman:
Chevy doesn't list a power increase from the Y87 exhaust, and I think it's more cosmetic than functional. Just by virtue of the fact that it has two outlets rather than one, it should help a bit.
One thing you could look into, if you want, is getting ahold of an exhaust from a Z28/TA or SS/WS6.
Cale did that on his, and I will be doing it on mine. Cale said that it sounds really good, and that he got a boost in power from it.<hr></blockquote>


He got the whole cat back right? because just the muffler will not do much. It would be better to get the s pipe and the I-pipe from the ls1 and get the muffler and tips of your choice.

[Rik]

I picked up a takeoff Z28 muffler and tips from SLP for $50, including shipping to Orlando. You could also get them from a junkyard.
http://www.nobispro.com/carpics/pics/backside.jpg
And no, you won't get any noticeable power increase from just a muffler. In fact, without a bigger intermediate pipe, a dual outlet muffler will actually DECREASE your power by a tiny amount, all other things being equal. Think about it...with a single outlet, the exhaust gasses go straignt into the muffler on one side and straight out the other. With dual outlets, half the gasses must bounce off the end, and fight their way back upstream to exit from the other end of the muffler.
But the difference is too small to notice, and dual outlets look WAY better than one.
So if you are going to get a Z or TA muffler at a boneyard, you might as well pick up the i-pipe at the same time (remember that 98+ V8's have dual cat setups, might have to futz with it to make it fit) or just have a muffler shop make you a bigger i-pipe, whatever size you want...I had my Z muffler installed and a 2.75" pipe custom made for $125.

Rik

[TheV6Bird]

Hey, are Y87 exhausts mandrel bent, or are they still crinked (or whatever the word is)

[edge24_99]

If I ran dual exhaust( y piped) off my stock 96 would I need to have a (cross?) pipe? To balance the exhaust.

[defrag]

the "dual exhaust" is really just a second pipe coming out of the side of the muffler. 1 inlet-2 outlets. so no i dont think youd need any kind of balancer

[Guardsman]

Veesix, I'm getting the entire catbcak set-up. The guy I'm getting it from is replacing his with a Flowmater Catback.
V6Bird, the pipes are the non-Mandrel (crinked) bend.
Edge, you don't need a balancing pipe, because the exhaust comes off of the manifolds, and goes into a Y-pipe, then back through the cat, and to the muffler in a single pipe.