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Technical Ford 9 Inch Rearend I.D.

Discussion in 'The Hokey Ass Message Board' started by Speed Gems, Aug 25, 2019.

  1. Speed Gems
    Joined: Jul 17, 2012
    Posts: 2,480

    Speed Gems
    Member

    My uncle is tearing apart a Ford rearend for a new project. He knows it's a 9 inch be want's to know what it's out of, what gears it's got and so forth. I didn't get any pictures of it but he said it had brass washers behind each bolt. And the tag reads WDG-EL 7GD And the bottom line reads 2 50 9 040A. Thanks for any of your help in identifing thid rear end. 68972140_2845140468834784_2409117877257895936_o.jpg
     
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  2. woodiewagon46
    Joined: Mar 14, 2013
    Posts: 1,477

    woodiewagon46
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    from New York

    According to the paperwork I have, WDC-EL, signifies Ford and Mercury vehicles from '77 & '78. 2.50 Ratio, the 040A is the assembly plant. I don't know what the 7GD is, the book states "Number shown only when it affects interchange" and the 9 is the date code, It also lists that the axles have 28 Splines. The brass washers are sealing washers to prevent gear oil from weeping thru the threads. Perhaps someone else can tell us what the 7GD means.
     
  3. squirrel
    Joined: Sep 23, 2004
    Posts: 44,328

    squirrel
    Member

    WDC maybe?

    77-78 Ford big car, 2.50 ratio

    WDC-EL Ford Pass. 77 2.50 9.0 NL 28 -
    Ford Pass. '78, to 3-15-78 2.50 9.0 NL 28 -
    Ford Pass. '78, from 3-15-78 2.47 9.0 NL 28 -
    Mercury '78, to 3-15-78 2.50 9.0 NL 28 -
    Mercury '78, from 3-15-78 2.47 9.0 NL 28
     
  4. Speed Gems
    Joined: Jul 17, 2012
    Posts: 2,480

    Speed Gems
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  5. Mr48chev
    Joined: Dec 28, 2007
    Posts: 26,095

    Mr48chev
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    This is the easiest to use and most complete Ford rear axle tag ID page I have found.

    http://fordification.com/tech/rearends_ford01.htm
    Page 2 half way down verifies what Woodiewagon and Squirrel already posted.
    There is no listing for WDG EL 2019-08-26.png
     
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  6. Mr48chev
    Joined: Dec 28, 2007
    Posts: 26,095

    Mr48chev
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    For that matter they don't show any axes with WDG codes. 2019-08-26 (1).png
     
  7. squirrel
    Joined: Sep 23, 2004
    Posts: 44,328

    squirrel
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    it's difficult to read rusty old tags, you know.
     
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  8. Sounds like some good Bonneville gears.
     
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  9. Mr48chev
    Joined: Dec 28, 2007
    Posts: 26,095

    Mr48chev
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    1977 gas crunch gas mileage gears. Couldn't pull a sick whore off a pot with the but you could cruise at 85 with a 55 mph speed limit all day.
     
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  10. Boneyard51
    Joined: Dec 10, 2017
    Posts: 3,388

    Boneyard51
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    What are those 8 3/4 rear ends? I’ve heard of 8 inch and 9 inch even 9 3/8 but never 8 3/4.
    I guess those 7 3/4 were those four bolt Falcon six cylinder car rear ends?




    Bones
     
  11. Speed Gems
    Joined: Jul 17, 2012
    Posts: 2,480

    Speed Gems
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    @Boneyard51 I think the 8 3/4 may have been DANA rear ends maybe, because i think a lot of them went into Dodge pickups too.
     
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  12. Boneyard51
    Joined: Dec 10, 2017
    Posts: 3,388

    Boneyard51
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    Ok, I went back and looked at the whole post and saw 8 1/2 , 7 inch 7 1/2s ....all different kinds of rest ends! I imagine your right, Ford used several Dana rear ends.
    I’ve got one, in the barn , out of 1960/70s Ford pickup that is a Dana 60, 3:54 Traction lock, but has 1/2 ton, 5 on 5 1/2 bolt pattern. Only one I’ve ever seen, I know there out there, but this the only one I’ve encountered. And I have pulled a lot of rear ends out of Ford pick ups.
    I’ve got a van full of n case nine inches.




    Bones
     
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  13. Speed Gems
    Joined: Jul 17, 2012
    Posts: 2,480

    Speed Gems
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    @Boneyard51 The "N" cast into those 3rd members means Nodular iron and the high performance drag/circle track etc. guy like those because it's better iron, still a casting but made of better material. There is one rear end that is build with the "N" cast inside with a part number i can't remember as well.
     
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  14. Boneyard51
    Joined: Dec 10, 2017
    Posts: 3,388

    Boneyard51
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    Yep, I haunted the salvage yards and kept an eye out for them. At my local salvage yard all rear ends were $50 each. The odd thing I found out was that Ford sprinkled them wille-nillie . The big 460/400 cubic inch pickups, never had them. But you find a 302 powered Sport pickup, you were almost guaranteed an N case, 3:50 traction loc. I got everyone I could find. Plus some 44 s and 60 s.

    I guess I’m just a “ rear end” kinda guy! Lol



    Bones
     
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  15. squirrel
    Joined: Sep 23, 2004
    Posts: 44,328

    squirrel
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    8 3/4 " rear is a 9" with a slightly smaller ring gear, used in the mid 60s in Falcons, Mustangs etc? There is reference in the 1965 Ford compact/midsize shop manual.
     
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  16. Working at a Ford dealer in those years I remember doing a lot of dealer installs of limited slip on the 9" rear ends. The half tons with factory limited slip had integral(Dana) rear ends from the factory.
     
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  17. Boneyard51
    Joined: Dec 10, 2017
    Posts: 3,388

    Boneyard51
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    Not sure of the years you are talking about, but Ford pick ups in the late sixties and throughout the seventies also had traction enhancers in the nine inch from the factory. The 250s all had Dana’s with or with out traction enhancers. You may notice I use the word traction enhancers. The reason if you use the words” limited slip “ or “track-loc “ or “ posi- trac” etc. everybody starts disagreeing with you! Most of the traction enhanced rear ends Ford put out , we’re some sort of clutch type rear end. If you got a “ Detroit locker” in a Ford, sometimes it was marketed under “ no spin”. Over the years Ford offered a lot of stuff under different names.




    Bones
     
  18. squirrel
    Joined: Sep 23, 2004
    Posts: 44,328

    squirrel
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    Ford used the Dana 60 in the 60s in half ton pickups, also...I have two of them....5 lug, 3.54 ratio, limited slip.
     
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  19. Boneyard51
    Joined: Dec 10, 2017
    Posts: 3,388

    Boneyard51
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    Just like the “ one “ I have, I mentioned in post 12.......and you have two! Lol They are beast, not unlike the rear ends of the high powered MoPars.
    Ford also offered the traction enhanced rear ends in Dana 44 and Dana 70 during the sixties.





    Bones
     
  20. squirrel
    Joined: Sep 23, 2004
    Posts: 44,328

    squirrel
    Member

    GMC also used both the 44 and 60 in half ton pickups
     
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  21. My 66 GMC has a dana 44. Yep a no spin is a entire different animal than a posi track or any clutch type rear. I owned a ot Z28 Camaro with a 12 bolt posi. someone had filled it with 90 weight gear oil instead of Gm posi lube. and it became a one wheeler.
     
  22. Boneyard51
    Joined: Dec 10, 2017
    Posts: 3,388

    Boneyard51
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    Clutch type traction enhancers in rear ends have a limited life time, determined by use. Even a “ wore out” clutch type rear end is better than an open rear end for traction, by how much, depends on wear and conditions.
    If you take a brand new clutch type traction enhanced rear end and put one tire on grass and one tire on pavement and pop the clutch..... the grass tire is going to spin! In order for them to work, both tires have to have somewhat similar traction, not exactly the same, but close.
    A Detroit Locker, No Spin, a few other types are a different story.




    Bones
     
  23. 52lomofo
    Joined: Jan 29, 2005
    Posts: 632

    52lomofo
    Member
    from edmonton

    Would that 2.50 center fit in another housing from 57-72??
     
  24. Well at least the chopped up finger hasn't affected you keyboard skills. I weld the spyder gears on a open rear. then remove the splines from the drivers side axle. you get a open rear. and when needed you install a splined axle and have a spool.
     
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  25. squirrel
    Joined: Sep 23, 2004
    Posts: 44,328

    squirrel
    Member

    the center should fit in any 9" housing from 57-86. The pinion yoke and axle spline count might be different, so you do have to consider that. Also some rears had a fill plug on the housing, not the center section, so pay attention to whether or not the center chunk has a fill plug, and whether or not it needs one.
     
  26. Boneyard51
    Joined: Dec 10, 2017
    Posts: 3,388

    Boneyard51
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    Well I’m 10% slower! We called those “ Lincoln Lockers”!






    Bones
     
  27. Ive had to put the rear end lube in thru the axle housing cause of no fill plug.
     
  28. I installed a used dodge flathead six in a pickup. had to use a oil pan without a dip stick and a block that did not have a dipstick. No way to check the oil. So I just put 5 quarts in it. The guy who owned it was from Eastern Kentucky . He came and picked it up and drove away headed home. I often wonder about when he stopped to get gas and check the oil?
     

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