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Thread: Underdrive pulleys

  1. #1
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    Oct 2011
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    Underdrive pulleys

    Whats everyones opinion on them?
    5.3TH400 & 3800 stallRichmond 3.73s with Trutrac

  2. #2
    Join Date
    Aug 2007
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    I think it's worth the money others think it's not and $$ should be spent elsewhere

  3. #3
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    Well that doesn't help lol
    5.3TH400 & 3800 stallRichmond 3.73s with Trutrac

  4. #4
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    '02 Silvy: Z71 EC Step Side 5.3L Nelson tuned
    2013 GMC Acadia: SLT1 Carbon Black
    1976 Corvette Stingray: Trying to save it, progress is slow.

    ^Ricky's Sweet PS Skilz
    09/21/2010 02:31 <danger_ranger83> I'm not really worried about the looks...I want it to be fast and ugly...bc no one wants to get outrun by something ugly

  5. #5
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    Thanks man
    5.3TH400 & 3800 stallRichmond 3.73s with Trutrac

  6. #6
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    Trussville, AL
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    Didnt read that thread, but i got one for the ability to run a short belt at the track. i wouldnt say its the best mod in the world by any means tho... dont hurt to have

  7. #7
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    I got mine cheap. I was already taking my other one off for a cam swap... Might as well.

    1969 Chevy RCLB C10 350/TH400 SOLD
    2007 Chevy RCSB 4.8 4x4 LS SOLD
    2008 Chevy RCSB 5.3 4x4 LT SOLD
    2010 Chevy CCSB 6.2 4x4 LT SOLD
    2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
    2013 FORD CCSB F350 6.7 Powerstroke 4x4


  8. #8
    Join Date
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    Wichita Falls, TX
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    If you can get it super cheap i'd say go for it... otherwise just stick with the stocker.
    Plenty of guys out there running 10's on a stock UDpulley
    Alex

    02 Chevy RCSB V6 -> H/C 5.3L SOLD

    03 GMC RCSB 5.3L CAI,Tune,3/6 drop

  9. #9
    Join Date
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    The rule for me is if it cost more than 25$ per hp gained its prolly not worth it. In this case you will likely spend $200 and get 10hp so you are safe IMO.
    ECSB 2kSierra 2wd 4.8L-K&N-HPtuners-Calspeed LT's-Magnaflow-Tahoe20's-HankookRH06

    waiting to go in... 3.90s, 214/220cam

  10. #10
    Join Date
    May 2008
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    Quote Originally Posted by f4tal View Post
    If you can get it super cheap i'd say go for it... otherwise just stick with the stocker.
    Plenty of guys out there running 10's on a stock UDpulley
    There aren't PLENTY of guys running 10s... And if they are, where's the proof they're using a stock pulley?

    1969 Chevy RCLB C10 350/TH400 SOLD
    2007 Chevy RCSB 4.8 4x4 LS SOLD
    2008 Chevy RCSB 5.3 4x4 LT SOLD
    2010 Chevy CCSB 6.2 4x4 LT SOLD
    2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
    2013 FORD CCSB F350 6.7 Powerstroke 4x4


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