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need info on replacing cat

This is a discussion on need info on replacing cat within the External Engine forums, part of the LSx Technical Help Section category; Hello, My passenger side cat is gone and I need to change it out. I have searched and read a ...

  1. #1
    Junior Member bmax327's Avatar
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    need info on replacing cat

    Hello,
    My passenger side cat is gone and I need to change it out. I have searched and read a lot of info on this.
    At this point I just want to cut the old cat out and put a replacement in.
    Does anyone know the pipe size?
    One place I read that the inlet is 2-1/4" and outlet is 2-1/2".
    Is this true?
    Or is it 2.5" in/out?

    What would be the best replacement cat. I will do headers and a whole system, but not right now.

    Car is daily driver, can I cut the old one out and put a new one in with band clamps?
    Magnaflow or spun ones on evilbay?

    Help.
    ETA...Car is 1999 formula, warranty is out as I have 182,000 miles.

    Thanks in advance

    Brad
    Last edited by bmax327; 09-29-2006 at 07:10 PM. Reason: added info on car type

  2. #2
    Junior Member 1SICZ's Avatar
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    2002 35th Ann Z28

    182,000 miles ??? Holy shit bat-man......Anyways just go with a 2.5" Carsound Cat.....the pipe size should be 2.5"

    John
    Click for full size

    Too many mods too list......

  3. #3
    Junior Member bmax327's Avatar
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    Thanks

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