Straight 9 speed

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by peanut 21, Jun 30, 2019.

  1. Michael 247

    Michael 247 Heavy Load Member

    768
    3,519
    Nov 20, 2017
    Dublin Va
    0
    What will u be hauling ? interstate road or 2 Lane ?
     
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. peanut 21

    peanut 21 Light Load Member

    71
    5
    Oct 16, 2013
    0
    Interstate hwy
     
  4. BigJoeTX

    BigJoeTX Bobtail Member

    27
    16
    Feb 13, 2018
    Katy TX
    0
    I have a 9 speed Eaton Roadranger with 3:48 diff's, at 70mph i'm right at 1500 rpm's.
     
  5. 1972RedNeck

    1972RedNeck Light Load Member

    51
    66
    Aug 20, 2018
    0
    Yours is an overdrive 9 speed - .73:1 in high gear.

    To the OP - the following link has the part number for a conversion kit if you have the right transmission. It will not give you a full .73:1 overdrive, but it will give you a .87:1 overdrive. This will lower your RPM's from 2200 to 1900.
     
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.