Checking unknown ratio in an open rear?

Transmission and Drivetrain Tech

  1. challenger57

    challenger57 cuda57

    Messages:
    207
    Likes Received:
    15
    Joined:
    Sep 21, 2007
    Location:
    york, pa.
    Local Time:
    8:04 PM
    Do you check driveshaft rotation to tire rotation in an open rear the same way as you do a posi rear to determine gear ratio?
     
  2. 451Cuda

    451Cuda Well-Known Member

    Messages:
    1,911
    Likes Received:
    697
    Joined:
    Nov 19, 2008
    Location:
    Port-aux-Fran├žais, TF
    Local Time:
    8:04 PM
    Yes but rotate passenger side.
     
    • Like Like x 1
    • Garrett Ellison

      Garrett Ellison Amateur driver on public roadway, do not imitate.. FABO Gold Member

      Messages:
      2,918
      Likes Received:
      2298
      Joined:
      Jan 1, 2018
      Location:
      Southwest VA
      Local Time:
      9:04 PM
      Get the car chocked in place with one rear tire on the ground and one tire jacked up and the transmission in neutral. Rotate tire off the ground one full revolution and count rotation of driveshaft. Multiply driveshaft rotation by two for gear ratio.
       
      • Agree Agree x 1
      • brian6pac

        brian6pac Well-Known Member

        Messages:
        4,848
        Likes Received:
        3288
        Joined:
        Nov 15, 2016
        Location:
        N.E.Ohio
        Local Time:
        9:04 PM
        ^^^^What Garrett said^^^^
         
        • Thanks! Thanks! x 1
        • challenger57

          challenger57 cuda57

          Messages:
          207
          Likes Received:
          15
          Joined:
          Sep 21, 2007
          Location:
          york, pa.
          Local Time:
          8:04 PM
          Thanks guys, i knew there was something different.
           
          • Like Like x 1
          • challenger57

            challenger57 cuda57

            Messages:
            207
            Likes Received:
            15
            Joined:
            Sep 21, 2007
            Location:
            york, pa.
            Local Time:
            8:04 PM
            Thanks, i knew something was diff.
             
            • Like Like x 1
            1. This site uses cookies to help personalize content, tailor your experience and to keep you logged in if you register.
              By continuing to use this site, you are consenting to our use of cookies.