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Engine underdrive pulley?

Discussion in 'Powertrain' started by hawaii, Aug 2, 2006.

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    hawaii New Member

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    underdrive pulley?

    anybody here replace their underdrive pulley with an aftermarket one?
    i.e AEM or UR? I'm curious to their claims to free up hp parasites.
    hawaii, Aug 2, 2006
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    SaberJ2X Lurk MOAR

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    can you feel the diferrence? like... *I guess it's doing something* or *I can feel it a bit in the 2500rpm to 3500rpm zone*?
    SaberJ2X, Aug 3, 2006
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    jtweezy New Member

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    yeah i got the UR crank pulley and Alternator pulley...frees up about 5hp... stock crank pulley weighs 8lbs and UR weighs 2lbs
    jtweezy, Aug 3, 2006
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    jtweezy New Member

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    yeah spins easily.....more torques
    jtweezy, Aug 3, 2006
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