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Whipple 2.3 pulley size help

Discussion in 'Engine/Tuning' started by redfire04cobra, Jul 23, 2017.

  1. redfire04cobra

    redfire04cobra New Member Established Member

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    Feb 17, 2013
    Location:
    nc
    Hey, wanting to see if I can get some help on what pulley I will need on my car to achieve 19#.
    I will be running a gen 1 whipple, kooks headers and would like to keep the stock lower. I have done some research and can't seem to find anything set in stone, so maybe I could some feedback from you guys. Thanks
     
  2. Mystique 04

    Mystique 04 New Member Established Member

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    May 30, 2015
    Location:
    Topeka
    Running a 2.8 pulley on mine and seeing 18#.Running stock logs and stock lower pulley.


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  3. ITSTOCK

    ITSTOCK Stock, I swear! Established Member

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    West Virginia
    3.0 should be right around 19#'s with the longtubes.
     
  4. Jiffy

    Jiffy Active Member Established Member

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    Jun 3, 2011
    Location:
    Melbourne, Australia
    I'm running a 3 inch upper and getting 15lbs on a Gen2 with shorties and hi-flo cats, 3 inch exhaust
     
  5. whitedevil95

    whitedevil95 @the03cobro Established Member

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    Feb 12, 2012
    Location:
    Temecula, CA
    Boost numbers seem so hit and miss. On my old gen 1 whipple set up I ran a 2.8 and saw 17.8psi of boost.
     
  6. R.D.P.

    R.D.P. Extra Sprinkles Established Member

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    Remember that all things being equal - closer you are to sea level, the higher the boost and cooler the air, the higher the boost. Also, long tubes will lower your boost - again all things being equal. Gen 1 vs Gen 2 Whipple 2.3 are usually considered to have a 1-2lb difference in favor of the Gen 2, so with a Gen 1 and longtubes, you are going to really struggle to hit 19# with an upper only. The smallest readily available pulley is a 2.75, to get smaller than that you will need to find a near mythical Richard Racing 2.7 or 2.6.
     
    Last edited: Aug 7, 2017
    whitedevil95 likes this.

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