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Thread: Underdrive Pulleys

  1. #1
    Join Date
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    Underdrive Pulleys

    When you get underdrive pulleys on a Marauder do you still use the stock belt?

  2. #2
    Join Date
    Aug 2003
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    Auburn, CA
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    Yes, the stock belt still fits and works perfectly. I use a gatorback-type belt in the stock size with my u/ds.

  3. #3
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    Yes.

    But there are issues with the U/D pulleys on these cars. Specifically with the stock altenator pulley.

    EDIT: Disregard if you do not have the clutch'd alt. pulley.

    11.98 @ 115 mph
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  4. #4
    Join Date
    Sep 2002
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    I had underdrive pulleys on my car for almost 2 years with no problems at all. The only minor issue was that the lights dimmed a little at idle when there was a heavy draw, but Dennis bumped the idle in Drive speed by 100 RPM and that cured it.
    The Blackbird
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  5. #5
    The 2001 Cobra (4V) used the same u/d crank pulley as the 2V Vics/GTs.

    There has been quite a few problems regarding front crank harmonics/vibration due to the smaller diameter crank pulley.

  6. #6
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    Quote Originally Posted by metroplex
    There has been quite a few problems regarding front crank harmonics/vibration due to the smaller diameter crank pulley.
    Wasnt this due to improper installation??

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  7. #7
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    Dec 2002
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    Quote Originally Posted by Blackened300a
    Wasnt this due to improper installation??


    Yes I believe it was.
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