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Cruising RPM's??

Discussion in 'Intermediate CJ-5/6/7/8' started by wsg, Sep 29, 2006.

  1. Sep 29, 2006
    wsg

    wsg Member

    Hartselle, Alabama
    Joined:
    Nov 21, 2005
    Messages:
    90
    What is an acceptable "range" of RPM's for a 258 on the highway for extended periods? Ive seached some and seen anywhere from 2500 up to 5k. This sound right?

    Thanks!
     
    wsg, Sep 29, 2006
    #1
  2. Sep 29, 2006
    BobFortier

    BobFortier Member

    Joined:
    Nov 24, 2005
    Messages:
    254
    For 100km/h (60 mph) My I6 give me about 2500 rpm.

    I've made up a chart for this, because my speedo does not work anymore, and I have an aftermarket tach, so with the chart, I know that with my drivetrain, at around 2500rpm in 3rd high, I'm at about 60


    Bob
     
    BobFortier, Sep 29, 2006
    #2
  3. Sep 29, 2006
    ecamp55

    ecamp55 Road Whore

    Cottonwood, AZ
    Joined:
    Jan 14, 2003
    Messages:
    36
    I always try to keep mine about 2800 rpm. Dunno how many MPH that is, my speedo hasn't worked in years.
     
    ecamp55, Sep 29, 2006
    #3
  4. Sep 29, 2006
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
    Joined:
    Aug 10, 2003
    Messages:
    23,596
    I wouldn't worry about it. You'll run out of power way before you run out of RPMs. A 258 in good condition should be able to run between 3000 and 4000 RPM indefinitely.
     
    timgr, Sep 29, 2006
    #4
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