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LT1 Exhaust size?

This is a discussion on LT1 Exhaust size? within the LT1 forums, part of the Vehicle Specific category; Im going to order an exhaust cutout for my car but im not sure witch size to get. I figure ...

  1. #1
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    1996 Silver Trans Am M6

    Question LT1 Exhaust size?

    Im going to order an exhaust cutout for my car but im not sure witch size to get. I figure I will have the shop throw a new muffler and tips on as well. So, what is the outlet size of the y-pipe? And what size cutout should I order?

  2. #2
    Member WS6SP33D's Avatar
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    Nov 2011
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    QuarterMile, KY
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    Red w/ silver Stripes
    2000 WS6 6 Speed

    If it's factory Y and i not mistaking it's 2 1/2" that runs into the over the axle pipe. I know most aftermarkets i have installed are 3"

  3. #3
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    1996 Silver Trans Am M6

    Thanks! Went ahead and picked up the 3" cutout.

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