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Thread: Any difference???

  1. #1
    Join Date
    Nov 2003
    Location
    mob-town
    Posts
    68
    In 98-02 ls1 exhaust manifolds.. thought i had a set of flanges found but they came off of a 03 c5 vette and would not work.. also looks like different bolt patterns on driver and passenger side.. any info would be appreciated..
    Looking for a 05-07 Ext Cab or Crew Cab Chevy or GMC with some mods.. PM if you have anything

  2. #2
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    Yes, there is a difference in LS1 manifolds. There are camaro/firebird, corvette and GTO styles.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  3. #3
    Join Date
    Nov 2006
    Posts
    76
    '02 LS1 F-Body into a '92 c1500---

    The right side exhaust manafold would not fit. It interfered with the rear upper A-arm mounting bracket.
    I purchased an '02 5.3 truck manifold which cleared the bracket.

    However:

    I had to slot all three mounting holes on the pre-cat for it to bolt up. Pre-cat is stock, off the F-Body 5.7.

    Jon

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