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This is a discussion on ls7 CLUTCH PROBLEMS within the Manual Transmission forums, part of the Drivetrain category; my mechanic is puting a new ls7 clutch in my 98 ws6. He says it won't release. It has a ...

  1. #1
    Join Date
    Nov 2006

    1998 firebird formula ws6


    my mechanic is puting a new ls7 clutch in my 98 ws6. He says it won't release. It has a new bearing, slave cylinder, the cluch kit and flywheel. He says there was not as much travel in between the fingers on the old cluch, and the new one there is. Any idea's??? He just can't get it to release. Somebody on this site said to shim it but i would like to know is there a easyier way, or maybe something that my mechanic did'nt do rite? Please help????

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

    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    Are you saying the the slave cylinder is farther away from the new clutch setup and won't fully release the clutch from the engine? So it basically feels like it in gear all the time? If so, then yes you can shim the slave closer to the pressure plate. The only other thing I can think of that would act that way is a bad pilot bearing.

  3. #3
    The Bandit Wesman's Avatar
    Join Date
    Apr 2006

    1998 Trans Am WS6

    The LS7 has a self adjusting pressure plate, so the fingers may stick out further upon installation until it self adjusts to the proper height.

    The bottom line is the clutch is a direct replacement for the LS1 clutch. There is no need for a shim, do NOT use one, it will screw up the engagement point.

    Sounds like your mechanic didn't bleed the clutch well enough and its not disengaging, and he's just assuming its the clutch because you supplied a different one than stock.

  4. #4
    Now in Summit LT1 Flavor! Y2KArcticSS's Avatar
    Join Date
    Mar 2007
    Henryetta/Tulsa Oklahoma

    Summit White
    2016 Camaro SS

    I had the EXACT same problem with my mechanic, we ended up finding out that the master went bad as well. Replaced it and I was golden. You may be in for a new master....

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