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This is a discussion on Intake?? within the General Help forums, part of the LSx Technical Help Section category; I don't know if my 2000 ws6 has the orgianal intake, but the real question is it has markings on ...

  1. #1
    Join Date
    Nov 2006

    1998 firebird formula ws6


    I don't know if my 2000 ws6 has the orgianal intake, but the real question is it has markings on it like a junkyard the #'s are 12560688 and 2391? Is this a ls6 intake off a 2001 or 02 ws6?

  2. #2
    Moderator Cutlass's Avatar
    Join Date
    Apr 2008
    Madison, WI

    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    That's the LS1 intake part number. One big clue would be an EGR tube going into the top of the intake behind the TB.

  3. #3
    Member blk_jaws's Avatar
    Join Date
    Oct 2005
    Eastern, Kentucky

    Black on Black
    2000 Trans Am M6

    That or you can tell by the bottom of the intake, the ls6 is flat and the ls1 is kinda wavy
    SLP LT's, SLP High Flow Cats, 3" Flowmaster CB, Comp Cam, SLP Lid, LS6 Intake, BBK 80mm TB, SFC, Ram Air HO Hood, Lowered, Torq Thrust II's

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