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  1. 02-17-2006, 05:06 AM #1
    Ponti-MANIac
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    2000 Pontiac Trans-am WS6

    Underdrive Crank Pulley Does What?

    If Your Not Running A Supercharger, What Does This Accomplish?
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  2. 02-17-2006, 07:21 AM #2
    Deeavi
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    Crytal Red Tint Coat
    2013 SS Camaro Covertible

    Quote Originally Posted by Ponti-MANIac
    If Your Not Running A Supercharger, What Does This Accomplish?
    Slows down all accesory drives, altenator, water pump, etc. Thereby saving horsepower.

    I tried several, but I ended up with a 10% under drive Fluid Damper. Any thing less and I was having temp problems in the summer time with the ac going. I have an SLP HD radiator, but the water pump just was not turning fast enough in traffic with the smaller pulleys. The 10% Under drive works good for me!
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  3. 02-17-2006, 07:29 AM #3
    Ponti-MANIac
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    2000 Pontiac Trans-am WS6

    Where can I get my hands on the 10% underdrive fluid damper?
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  4. 02-17-2006, 08:48 AM #4
    Deeavi
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    Quote Originally Posted by Ponti-MANIac
    Where can I get my hands on the 10% underdrive fluid damper?
    Part Number: FLU-720102 at Summit Racing Equipment! It is not cheep, but it is a top notch balancer.

    http://store.summitracing.com/defaul...h.asp&N=400296
    Last edited by Deeavi; 02-17-2006 at 08:52 AM.
    2013 Camaro SS Convertible, Whipple Supercharger, Kooks Coated 1 7/8" headers, CAI Cold air induction
    http://s33.photobucket.com/user/Deea...?sort=3&page=1
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  5. 02-17-2006, 05:09 PM #5
    SeVeReDiStOrTiOn
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    05 Wrangler
    00 Z28 sold :-(

    Eh....save your money and put it towards some good headers...you'll be disappointed with the gains from a UP. But if you have money to burn then go for it.
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