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Underdrive Crank Pulley Question

This is a discussion on Underdrive Crank Pulley Question within the External Engine forums, part of the LSx Technical Help Section category; If I opt to install an underdrive pulley on my LS1 2000 Z28 will I see an increase in RWHP? ...

  1. #1
    Member 89LX's Avatar
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    Underdrive Crank Pulley Question

    If I opt to install an underdrive pulley on my LS1 2000 Z28 will I see an increase in RWHP? Is it worth the $$$ and which do you consider the best. Thanks

  2. #2
    Member DocEwww's Avatar
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    Its a proven mod and yes worth it. Approx 7-10rwhp.
    07' Trailblazer SS AWD 3SS - Imperial Blue
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    Senior Member mrr23's Avatar
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