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Thread: Vacuum Pumps

  1. #1
    Senior Member RACING JUNKIE BEAST477's Avatar
    Join Date
    Feb 2007
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    Michigan
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    1,908

    Vacuum Pumps

    Guys I've developed a problem this year with crankcase pressure. I don't currently run a vacuum pump and I'm thinking it's time for one.
    I'm still running my 540BBC the only changes I've made to it this year was to port the heads and build a set of headers. I picked up 2.5 tenths to my best of 9.12@ 147. Is there a horsepower level that it pretty much needs one over pan e-vac tubes?
    BEAST477






    Only a rich man can afford to use cheap parts.

    http://www.racingjunk.com/profile/177549

  2. #2
    Senior Member RACING JUNKIE
    Join Date
    May 2003
    Location
    Coldwater, MI
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    2,998
    There really isnt a horsepower level that you "must" have one. They are a great idea no matter and with the issues your having, its a even better investment.

    Moroso 3 vane is the ticket IMO
    David Lanning
    IHRA NHRA 387B

    Fleenor Racing Transmission
    419-280-1406
    Lanning Electric
    Complete Drag Car Wiring
    APD Race Engines
    www.apdracing.com

  3. #3
    Senior Member EXPERT BUILDER
    Join Date
    Dec 2010
    Posts
    345
    Quote Originally Posted by hammertime
    There really isnt a horsepower level that you "must" have one. They are a great idea no matter and with the issues your having, its a even better investment.

    Moroso 3 vane is the ticket IMO
    Its also worth a few more HP. I have seen as much as 25hp on 565 on the dyno. I run moroso 4 vane with line on the back of the block, pulling from under the intake.

    Good luck

    Nice car BTW


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