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What pulley setup should i run?

Discussion in 'Engine/Tuning' started by JMetro64, Sep 7, 2019.

  1. JMetro64

    JMetro64 Member Established Member

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    I am having a kenne bell 2.2 put on my car in a couple weeks and have a few different pulley options to run. I am either running a 3" upper with a 2lb lower, or a 3.25" upper with a 4lb lower. Not sure if either setup would yield any difference, but I have read a lot of contradicting opinions on whether or not lower pulleys give more torque than boost from upper pulleys. Any input is much appreciated!
     
  2. bigmoose

    bigmoose Well-Known Member Established Member

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    What fuel?
     
  3. JMetro64

    JMetro64 Member Established Member

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    just 93 with a little VP Octanium
     
  4. bigmoose

    bigmoose Well-Known Member Established Member

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    Those combos should probably get you 18#. You should be ok on 93 with not too aggressive timing.

    Either setup shouldn't matter. They are about the same. I run a stock lower and a 2.76 on my KB2.2 with no belt slip.
     
    Last edited: Sep 7, 2019
  5. TerminatoRS

    TerminatoRS Member Established Member

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    2.2 here with a 3" (17psi per the chart on KB's site) on the blower and a 2# lower on 93. No issues here either.
     

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