Results 1 to 6 of 6

Thread: Identify rear axle ratio

  1. #1
    Join Date
    Jun 2017

    Identify rear axle ratio

    Hi all,
    Just bought myself a 95 SC with a warmed up engine, dyno says 330 rwhp. Don't have the specs yet but it's moving along quite well.
    Looking at the door jamb data plate AX=9 and TR=LKKJJ. Been trying to decode but no luck. Any help appreciated. By the way car is
    a Canadian car with km/h speedo.

  2. #2
    Join Date
    Feb 2017

    The chart of axle codes doesn't list a code "9". Are you sure that's it?

    The L indicates a 4R70W transmission, the KK and JJ are the front and rear spring codes respectively.


  3. #3
    Join Date
    Jan 2003
    Woodbridge, VA
    If it is stock it is probably an open 3.31 for the auto cars. Thats what mine was.

    And 3.31 isn't listed in the Tccoa article so probably a good chance thats it.

    And the other 95 auto I have here has the code "9". But Id have to lift it to see if the stock tag is on the housing to see what that says.

    There should be a tag on the diff housing that will have the ratio on it. Would be something like 3 31 for an open 3.31 or 2L73 for a locker 2.73.
    Last edited by BLOWN38; 06-14-2017 at 10:21 AM.
    SCCoA Member #1826
    Bettie Riding jack stands
    SCARlit on drag duty now

  4. #4
    Join Date
    Feb 2017
    I suspected that was possible, I remember A-Train posting about those cars years ago. Never was under one in person to see it though.

  5. #5
    Join Date
    Jun 2017
    I'll get under the car later and check.

  6. #6
    Join Date
    May 2004
    Va. Beach,Va.
    If all else fails jack the car up and spin the rear tire 1 revolution and count how many times the drive shaft turns............
    SCCOA Member #2406
    '94 SC AUTO - 2.3 Whipple
    '90 SC AUTO - Bone Stock

Similar Threads

  1. rear end ratios
    By tim in forum Technical Forum
    Replies: 4
    Last Post: 12-10-2002, 10:52 PM
  2. What is my rear end ratio?
    By blkthndr in forum FAQ Forum
    Replies: 0
    Last Post: 10-28-2002, 07:08 PM
  3. Rear end ratio 90 sc auto?
    By purpleshadow25 in forum Technical Forum
    Replies: 2
    Last Post: 10-11-2002, 12:37 AM
  4. Another rear end ratio question please?...
    By tbirdsc35th in forum Technical Forum
    Replies: 2
    Last Post: 08-11-2002, 04:12 AM
  5. Rear end ratio question???...
    By tbirdsc35th in forum Technical Forum
    Replies: 1
    Last Post: 08-02-2002, 07:38 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts