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Thread: pullies ?????

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    pullies ?????

    I installed a 2002 hd charger in my 02 150 But Im wondering what size crank pully I should start with or if my truck would handle a bigger pully ... also what should I be seeing for boost stock ?
    thanks for any help you could give me .

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    harleytruck9144's Avatar
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    to make your truck faster while sticking on the extremely reliable side, go with a 6lb and a predator. if you want a little more performance while taking a little more risk, like myself and a few others, strap on the big ole 8lber and do some of ^ that! make sure you get a good dyno tune though with A/Fs less than 12.

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    with you having a regular f150, try keeping boost at 12#'s or less. With the procharger i had on my 01', i was seeing 12#'s easily....but i didn't want to go any higher than that. I would say go with a +6# lower pulley from any good tuner. That along with your stock HD blower will be putting out about 12#'s of boost. Hope this helps.

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    thanks for the advise. keep your fingers crossed.

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    hey harleytruck9144, if i go with 6lbs lower pulley, how much boost will i gain? and if i get a predator, do you recommend a Auxiliary Idler Kit

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    bigdaddy1381,

    by swapping to a 6# lower, you'll gain about 5-6#'s probably...you'll see somewhere around 11-12#'s total. I'm running an 8# lower and still have no aftermarket idler pulleys yet and have had no signs of slippage.

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    i have a 02 sc harley stock as of right now what would be the first thing to buy to make it faster and what size pullys

  8. #8
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    what are your goals...

    common upgrade to feed the need for speed
    6lb lower and appropriate belt, for total of 12lbs of boost
    some NGK TR6 :PLugs gapped accordinly
    Tuning device like Sniper, SCT XCal II or Predator and a custom dyno tune to get ya dialed in correctly from a reputible tuner
    Possibly a MAF extender if your are close to maxing out your MAF...
    Last edited by bgstew6; 06-27-2007 at 07:40 PM.

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    what is a maf extender

  10. #10
    ResFirma Mitescere Nescit
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    The MAF can only read a certain amount of airflow...when that threshold is exceeded, you can no longer be assured of a safe air/fuel ratio. The extender electronically increases the effective range.

  11. #11
    World's Fastest Street HD
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    Diablo MAFia
    http://www.johnnylightningperf.com/s...roducts_id=168




    SCT MAF
    http://www.lightningforceperformance...ter-p-241.html




    essentially do the same thing, the SCT is more expensive though. Best bet is go with whatever product your tuner is most comfortable with tuning.
    Diablo MAFia on setting # 2 here

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