Performer RPM vs. Victor Jr

Discussion in 'Engine Topic' started by loudvolvo, Aug 7, 2009.

  1. loudvolvo

    loudvolvo Veteran Member

    Sep 24, 2008
    Shelbyville, Ky
    right now ive got a performer rpm, i was thinking about gettin a victor jr and see how much of a difference it makes, one of my buddies has one for cheap. my question is how much taller is the victor jr than the rpm? ive got a stock hood right now and am worried about hood clearance
  2. MrZeal

    MrZeal Member

    Jul 8, 2009
    Oklahoma City, OK
    Much taller, I think, depending on which Victor JR it is (they have several). 1500-6000 RPM is better, 2800-7000+ Victor JR dominates.
  3. blend120

    blend120 Veteran Member Lifetime Gold Member

    Apr 11, 2006
    Goshen, NY
    Check this video out. The editor for Hot Rod Magazine does a comparison of Victor JR., RPM Air Gap and Performer RPM.

    Looks like if you can mill down the plenum divider you will be in the money.
    Last edited: Aug 7, 2009
  4. sooner

    sooner Veteran Member Lifetime Gold Member

    Mar 11, 2009
    ^^nice info. I need to do the drop plenum mod on my manifold too. I belive I will use a mill to do mine, instead of chucking it up in a lathe like the video suggests.:eek:
  5. tallman1970

    tallman1970 Veteran Member Lifetime Gold Member

    Jul 31, 2000
    You will gain 5-10 more top end horsepower by trading off about 10 ft-tq in the low end.
  6. Rick WI

    Rick WI Veteran Member

    Jul 9, 2001
    Madison, WI
    Doing that back to back dyno test for the past 15 years, maybe a zillion pulls with a billion engines, you are better off, much better off, with the RPM.
  7. theflash

    theflash Veteran Member Lifetime Gold Member

    Feb 27, 2004
    Podunk, CT

    The Vic Jr (there's only one, #2975) is actually shorter than the Performer RPM.
  8. MrZeal

    MrZeal Member

    Jul 8, 2009
    Oklahoma City, OK
    I beg to differ, Flash

    There is the old school low Victor Jr (2975), plus the Victor Junior Bowtie, Victor Junior Tall, Victor Junior LS1 and Victor Junior Sportsman.
  9. noobwrench

    noobwrench Veteran Member

    Mar 11, 2009
    Lodi/Burson California
    Not worth the swap.
  10. 1WILDZ

    1WILDZ Veteran Member

    Jun 14, 2002
    Rockland County, NY
    I just took a victor jr off my sbc,( 2 years ago) put a dual plane Dart back on it, right away I noticed the increase in low end torque. I never race the car anymore so I'm very happy with the dual plane for the street

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