Stock y pipe and 3" cat compatibility
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Supreme Member
Joined: Aug 2004
Posts: 1,046
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From: Pasadena, TX
Car: 1991 RS
Engine: 5.0
Transmission: 700r4
Stock y pipe and 3" cat compatibility
I just got my new exhaust today and plan on having it installed soon, but I also want to put a new cat on. I was looking at the Catco direct fit part no. 9118 3" inlet and outlet, will this fit the stock y-pipe?
Also I plan on installing Hooker 2055s later on. Will I have any problems then or should I wait until I have the headers to do the new cat?
Thanks for any help, Chris
Also I plan on installing Hooker 2055s later on. Will I have any problems then or should I wait until I have the headers to do the new cat?
Thanks for any help, Chris
Member
Joined: Nov 2003
Posts: 389
Likes: 0
From: Maryland
Car: 1992 Camaro RS
Engine: 305 L03
Transmission: Borg-Warner WC T-5
The Catco direct fit WILL fit, I know because I have a full 3" system hooked up to my stock y-pipe via a reducer. Whatever shop you take it to should easily be able to weld a reducer or expander on to your y-pipe to make it fit the 3" cat.
Joined: Mar 2000
Posts: 43,187
Likes: 45
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
The easiest and least expensive approach would be to wait until you have all the parts for the entire exhaust system and install it all at the same time.
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