Dual Exhaust

Polaris Man · May 25, 2001

I want to put a true dual exhaust on my 94 Chevy 3/4 ton 4x4 regular cab longbed. Have any of you guys ever piped a muffler or catlylic converter, (ram a pipe through it to make it strait through, i know its illegal). Or taken one apart and gut it, then weld it back together. How do they sound. I want to put true dual exhaust with 2 cats and 2 mufflers and send em out the corners. I want it to be deep and loud!!

Kania2k1 · May 25, 2001

They do sell aftermarket catalytic(sp?) converters. They are pretty pricy though. Not sure if thats the route you want to take.

76BBSub · May 25, 2001

It'll sound alot better if the cat is removed or gutted. I have a buddy with a late '80s IROC-Z Camaro. The other day he started it up, and it was the best sounding IROC I've ever heard. I asked him about it, he said it was the stock exhaust system but he gutted the cat. The cat tends to quiet and mellow the exhaust note, although most of the new cats have little or no negative effect on performance.

Jeff

Kansas Kid · May 26, 2001

Well, if you look at my signature you will see that my truck no longer has a cat on it (I swear it just fell off one day LOL). I just welded a piece of 3" aluminized pipe in its place. Like was mentioned, it will make a large difference in how the exhaust sounds. It made it a little louder at idle and alot louder when I get into it. But the biggest thing for me is that it gave the exhaust a much nicer tone.

To run true duals on your truck will be a chore. Both pipes coming from the exhaust manifolds will have to run down the passenger side until after the muffler, then the will have room to split the pipes towards each side. You probably won't have enough room for two cats because that area is going to be very cramped for space. The worst part will be trying to find an exhaust shop to do this for you.....

Shaners · May 26, 2001

If you run true duals you'll still need to run a crossover pipe to connect the two to equalize pressure. I'd suggest a 2-in 2-out muffler.

A friend of mine had a '91 Chevy truck and he kept the cat and ran straight 3" or 3 1/2" pipe with no muffler. That was actually a very nice sounding truck!!!

Polaris Man · May 26, 2001

I want to run 2 1/4 inch pipe, i might put headers on too. I could get a cat with 2 in and 2 out and ram a pipe through it and then put 2 mufflers on and do the same. Reason being that if I get stopped for noise, I want it to look stock, ya know. There are a couple of shops around that custom bend exhaust, hopefully one of them would do it.