I'm kicking around some exhuast ideas for my 93 Z28. I will soon be installing a set of Pacesetter LTs and I have a few decisions on how I want to finish it off:
Right now the car has factory manifolds and y-pipe, the cat was removed, there is just some pipe in it's place, and that runs back to a Flowmaster 3" Cat Back system. My first choice is to put on a Y-pipe and hope that it's long enough to reach the Flowmaster stuff.
My second choice, which is probably more expensive and time consuming is to buy a 3" X-pipe off ebay, it's only $25, and some 3" Dynomax Bullet mufflers, $40 each, and just run the pipes to the rear axle.
I'm not too fond of the Flowmaster sound and I need to get under the car and look at the cat back system itself. I figured if it was in good enough shape I could cut it up to get the piping I would need to reach back far enough to finish it.

Here's the X-pipe on ebay I was looking at:
http://cgi.ebay.com/ebaymotors/STAIN...Q5fCarQ5fParts

The dynomax mufflers are only 4" wide at their largest, I figured I could mount them right to the x-pipe. The only minor fab work would be connecting the headers to the x-pipe and then just some short straight sections after the mufflers.
Anyone done anything like this, any pictures?

 

You could buy a Jegs or Summit universal x-pipe kit for I want to say $75 and then have that fabbed up along with some turndowns to dump it out before the axle. That kit includes all the piping you will need and I actually run it myself, worked out really well.

 

I just found that searching on this site for other people's setups, that may be what I end up doing. I know the Y-pipe would be easier and cheaper but I don't think the x-pipe setup will be that much more money. On a related note, is it worth the hassle to fab up the x-pipe and dumps for a bolt on only LT1? Am I going to kill be low end torque and fuel mileage?

 

Summit X-pipe Kit, $100..then find you some extra bends if you need them, and the Mufflers.

Here is mine, I built it with the Summit Kit and some extra parts I had..

 

I would recommend a 2.5" kit because 3" will be complete overkill and I would imagine hinder low end torque a little bit. Even a car like mine with heads/cam wouldn't benefit from 3" duals over 2.5".

 

I agree..2.5" would work great for his setup. I needed the 3" to be effective for mine.

 

I ran that 2.5" Summit X-pipe kit on my light bolt-on car, loved it!
Dynomax Bullets and catted, dumped at the axle.

 

do the TD's the sound and power will be worth it.

 

Thanks all for the opinions, I'll let you know what I end up doing.

 

some of you TD guys above post some vid links or something! I'd like to hear it. I'm running LTs, ORY, into Hooker Aerochamber in stock location. I like it, but alway thinking about TDs in the back of my mind...

 

I don't have any vids..but trust me..it's worth it..

 

Ditto, I wish I didn't put cats on it though, kinda quiet.

I bet it sounded like sex when it was winding out, too bad I never heard it outside the car.

 

ok...i ran the adj. Borla wide open, then GMMG which is chambered but wide open and hated both...raspy, etc. I like the aerochamber sound, but always looking for options. Is it true that the TD and X eliminates the rasp?

I wonder if the bullets would pass for "mufflers" when the drag race class requirements call for mufflers?