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Harmonic Balancer

This is a discussion on Harmonic Balancer within the General Help forums, part of the LSx Technical Help Section category; Hello all I have had underdrive pulleys put on my 2002 ws6 a few years back. I need to replace ...

  1. #1
    Member joker's Avatar
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    2002 Pontiac Trans Am WS6

    Harmonic Balancer

    Hello all
    I have had underdrive pulleys put on my 2002 ws6 a few years back. I need to replace the harmonic balancer due to some wobble. I am not sure if that was replaced. I am wondering if I order a street performance replacement if it will be the same ? Any help is welcome , Thank You .
    UMI sfc,whisper lid,k-n,diablo,shift kit,kooks long tubes-N-y-pipe,Borla 3" cat-back,power bond underdrive pulley,msd wires,front- baer gt brakes, slotted and drilled rotors , braided lines,tuned and dyno'd.345 HP and 354 torque

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    Moderator Cutlass's Avatar
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    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    usually the only pulley replaced for underdrive pulleys is the harmonic balancer

  3. #3
    Veteran 0rion's Avatar
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    06 duramax

    sure the wobble isn't due to the bolt being loose? Might just need a new bolt.

  4. #4
    Smiles for 9.5 Years cammed goat's Avatar
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    Phantom Black Metallic
    2004 GTO M6

    Most aftermarket pulley kits will require "keyeing" the crank and replacement pulley as well. Before you bolt the new pulley in, you will have to drill a hole between the crank and pulley to keep the pulley from walking off the crank snout.

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