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y-pipe fitment

This is a discussion on y-pipe fitment within the External Engine forums, part of the LSx Technical Help Section category; If i get some headers with a 3" collector and a catback with a 3" catback will i need a ...

  1. #1
    Member egod's Avatar
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    Navy Blue Metallic
    1999 Trans Am

    y-pipe fitment

    If i get some headers with a 3" collector and a catback with a 3" catback will i need a slipfit y with 3" inlet and outlet diameters? will they all be catless unless otherwise noted? I am going to go catless so this really doesn't matter, I already have a hooker catback and I wanted to get the ebay headers and I need to figure out what size y-pipe I need. Thanks

  2. #2
    Member egod's Avatar
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    Navy Blue Metallic
    1999 Trans Am

    i've been looking but i can't tell if all you need is a y-pipe with matching inlets and outlets or if you have to find a matching one. anybody got any input

  3. #3
    Senior Member JaycenK's Avatar
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    Green
    1997 Camaro Z-28

    By a Y made for that car and it will fit. The back of the Y shoud be tapered down to like 2 and 7/8ths or so. this way it can slip fit to the cat back. ask the seller if it will fit.

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