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  1. #1

    Default Ford LTD LX rear axle

    Currently working on pulling the stock axle out of my 84 LTD LX, and thought I’d share my axle code and tag for record keeping purposes.

    I was always under the impression that the LX models came with the 3.45 T-Lok rear axle.

    Turns out my 84 has a 3.27 ratio 7.5 rear axle. Was surprisingly peppy for just an Explorer 302/EFI/AOD car.


    Tag reads from top to bottom, left to right:
    FC CD AD12
    3L27 75A5939C

    (won’t let me upload the picture)

    It also came factory with an 11/16” rear sway bar.

    Sent from my iPhone using Tapatalk
    Last edited by wdanison43103; 04-11-2021 at 12:22 PM.
    1984 LTD LX, 160k mile Explorer 5.0, Comp XE264HR-14 cam, Alex’s Parts springs on stock GT40 3 bar heads, Unported Explorer intake, 1 5/8 shorty headers, off-road H-Pipe, Spintech 9000 mufflers, Holley Terminator X Max, J-Mod 4R70W, Mustang 8.8 w/ 3.73s, Tubular front and rear control arms, front coilovers, Turbocoupe rear coil springs

  2. #2
    FEP User
    Join Date
    Aug 2013
    Location
    Lawrence Swamp. Amherst, MA
    Posts
    53

    Default

    I C U list out what 'the bill of laden' sez.
    Can U actually "decode it" (ie list out where it sez / what it sez)?

    FC CD AD12
    3L27 75A5939C

    I guess the "3L27 "= the rear gear. (I can get w/a tire spin) What's the "L" for?
    Where might the Trac Loc show?
    What do the other ltrs/# indicate.

    Thanks so much.
    Brandie new to this 1 even w/8 mo ownership. No Y pipe found yet so am not running it).
    Chad
    Seeking: fox station wagon int/ext trim (esp LTD/Marquis)
    Retire/restore ol Bronk to daughter
    chrlsful@aol.com

  3. #3

    Default

    The tag should should actually read...

    WFC CD 4D12
    3L27 A75 S939C

    And the codes mean...

    WFC CD = axle assembly model/code
    4D12 = axle assembly built on April (D) 12, 1984 (4)
    3L27 = 3.27:1 axle ratio (3 27), Traction-Lok/limited slip differential (L)
    A75 = 7.5" ring gear diameter (75)
    S939C = axle model, built at Sterling Axle Plant (S)
    Axle Tag Decoder
    Buck Tag Decoder
    Door Tag Decoder
    Owner Card Decoder
    Transmission Tag Decoder
    VIN Decoder

    FEP Registries: Black Magic & Crimson Cat / Cobra / Dominator / G.T.350 / LTD LX/Police & Marquis LTS / M81 / Pace Car / Predator / Saleen / Turbo GT & Turbo RS / Twister II

    Wanted (Dead or Alive): VINs, door tags, buck tags, build sheets, window stickers, owner cards, transmission tags, axle tags

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