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What size cutout do I need?

This is a discussion on What size cutout do I need? within the External Engine forums, part of the LSx Technical Help Section category; If I have three inch pipes all the way back under the car do I need a three inch cutout. ...

  1. #1
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    What size cutout do I need?

    If I have three inch pipes all the way back under the car do I need a three inch cutout. I'm not that up on cutouts. Are cutouts usually placed before the rear axle or after it. Any help is appreciated.

  2. #2
    Senior Member Hurley711's Avatar
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    414 RWHP 395 RWTQ
    00 Black Ram Air Trans Am

    Yes 3 inch, usually before the axle in the I-pipe under the back passenger seat

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