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What is the ID of the stock intermediate pipe on 98-02 Z28's?

This is a discussion on What is the ID of the stock intermediate pipe on 98-02 Z28's? within the External Engine forums, part of the LSx Technical Help Section category; I assume that the LS1's came from the factory with 2 3/4' intermediate pipes? Is that correct?...

  1. #1
    stringtheory
    Guest

    What is the ID of the stock intermediate pipe on 98-02 Z28's?

    I assume that the LS1's came from the factory with 2 3/4' intermediate pipes? Is that correct?

  2. #2
    Senior Member ninobrn99's Avatar
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    Aug 2003
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    Honolulu HI
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    Pewter
    all bore 370 Trans Am

    yup

  3. #3
    Member
    Join Date
    Aug 2005
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    Sugar Land, Texas
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    Supersonic Blue
    2012 Z06

    The passenger side down pipe off the header is double walled resulting in a very small inside diameter. Probably more of a restriction then the 2 3/4" intermediate pipe.
    2012 Z06
    08 Corvette 10.88 @ 125.25 mph(sold)
    98 Camaro 10.79 @ 122.64 mph, 1.44 60'(sold)

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