3 inch exhaust/ 3 inch cat?
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Junior Member
Joined: Sep 2002
Posts: 42
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From: Texas
Car: 1992 Camaro RS
Engine: L03 305 TBI
Transmission: T5
3 inch exhaust/ 3 inch cat?
If I buy a 3inch exhaust can I use my stock cat or doI have to buy a 3 inch cat immediately for it to work and then would I have to buy headers too?
Joined: Feb 2001
Posts: 13,774
Likes: 567
From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Most catbacks will have a necessary reducer attached to the cat connection so that you can retain your stock cat. Just buy the cat-back that matches your engine code and everything will bolt up. When you go to a 3" cat later you can cut the reducer off and be a true 3".
Senior Member
Joined: Apr 2003
Posts: 595
Likes: 0
From: Albany GA
Car: '90 RS Vert
Engine: 305 TBI
Transmission: 700-R4
If you decide to go ahead and get a cat get the Carsound. I bought mine at abou $32 off Ebay. That's pretty cheap! You might as well go ahead and upgrade the cat while you are at it.
If your stock Ypipe is 2.5" you can use a reducer there...
If your stock Ypipe is 2.5" you can use a reducer there...
Last edited by Speedgraphic; Feb 11, 2004 at 06:39 PM.
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