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Technical Ford 9" rearend identification

Discussion in 'The Hokey Ass Message Board' started by MaineRodder, Mar 13, 2020.

  1. MaineRodder
    Joined: Mar 18, 2014
    Posts: 84

    MaineRodder
    Member

    I did a search, and I know I'm far from the first person to request help identifying a rearend. Sorry about that, but I couldn't find the answer via a search.

    The tag was lost or removed from it long before I got my truck, so all I have to go on are the cast numbers. I'm trying to buy brake parts for it, and of course all the auto parts stores are set up with a system where they look up parts by year, make, and model. Without that info it's proven impossible to find the right brake parts. Hopefully someone on here can help.

    I don't have an axle-end-to-axle-end measurement, but I have a backing-plate-to-backing-plate (outer rim) measurement of 56.5". I also have the following stamped numbers on the rearend:

    7E22
    7E31
    DIF 44

    At least that's what they look like to me. I've attached a couple photos. Hopefully someone can make sense of this information so I can figure out what brake parts to buy. Thanks for looking.
     

    Attached Files:

  2. Boneyard51
    Joined: Dec 10, 2017
    Posts: 6,776

    Boneyard51
    Member

    Many rear ends have been changed in those old trucks. Just measure the width of your shoes, and diameter of the drum, some of the big differences in nine inch rear ends. Also measure the diameter of the wheel cylinder and you should be good.






    Bones
     
  3. Hnstray
    Joined: Aug 23, 2009
    Posts: 12,357

    Hnstray
    Member
    from Quincy, IL

    @MaineRodder

    None of those numbers/letters are very helpful. However, being a 9” Ford rear end, it is safe to ***ume it is a ‘60s to early ‘70s era axle. First measure your drum inside diameter and width of the lining on the shoes. For example, 11” x 2” or whatever.

    If you go to the Rockauto.com website you can navigate your way into Ford vehicles, F-150 and pick the year of your truck, follow down the list to brake parts, then linings and look for dimensions of the offerings. Pics are usually available. You may have to change year model a bit, but with a little sleuthing, you should be able to zero in on an application that will fit yours. There were many models that used the same parts.

    Ray
     
    Last edited: Mar 13, 2020
    i.rant likes this.
  4. squirrel
    Joined: Sep 23, 2004
    Posts: 59,919

    squirrel
    Member

    The 7E... number mean that part was cast in May, 19x7. Could be 1967 or 1977. If the engineering numbers such as C7AW... all start with a C and not a D, then it's likely it's from the 60s. If any of them start with D, then 1970s.

    But that's the center section, and we don't have any clues as to whether that might have been changed, or what the housing or brakes look like, shoe size, bolt pattern, etc.

    So, you're probably best off following the advice to measure brake shoe and wheel cylinder sizes, and look up likely candidate vehicles on rock auto to find something that matches.
     
    Hnstray likes this.
  5. Pewsplace
    Joined: Feb 10, 2007
    Posts: 2,795

    Pewsplace
    Member

    I'm working on the same rear end now. It came out of a 59 Ford Truck and the brakes are 11x2. I simply called Currie and they told me what brakes, cylinders and misc parts I would need. Mine is a big bearing unit with 1/2" holes which helps them with the correct plates. Hope this helps.
     
  6. Mr48chev
    Joined: Dec 28, 2007
    Posts: 35,966

    Mr48chev
    ALLIANCE MEMBER

    As the guys said, the Id of the drum and width of the shoes will give you most of the needed info.
    56.5 on the backing plates which is a totally useless measurement means that you probably have a bit over 60 inches wms to wms if you have 2 inch wide brake shoes.
    There are a ton of look for this, look for that nine inch id pages to search though to pick out some of the find details but outside of a vague casting year as Jim pointed out the casting numbers don't mean a lot.
    Little bearing/ big bearing usually gives and indicator of the year separation. The earlier axles having the small bearing for the most part.
    There is a reasonably accurate WMS to WMS chart for nine inch rears here http://www.carnut.com/specs/rear.html

    Rock Auto an O'Reilly's both have a bit of a cheat sheet year wise as you can click on the blue part number on a Rock auto item and it tells you somewhat vaguely what years and models and brands said part fits. the Compatibility link on O'reilly's does the same thing.
     
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  7. vtwhead
    Joined: Oct 20, 2008
    Posts: 5,304

    vtwhead
    Member

    might get you in the ball park by size??
    rear end widths.jpg
     
  8. squirrel
    Joined: Sep 23, 2004
    Posts: 59,919

    squirrel
    Member

    not really, unfortunately. The small and big bearing rears were both used from the beginning. It will tell you more about application (small car, or truck/wagon/big car) than it will about year.
     
  9. sunbeam
    Joined: Oct 22, 2010
    Posts: 6,393

    sunbeam
    Member

    Start with the wheel bolt pattern
     
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  10. MaineRodder
    Joined: Mar 18, 2014
    Posts: 84

    MaineRodder
    Member

    Thank you guys for the advice. I appreciate the help.
     
  11. stillrunners
    Joined: Aug 27, 2009
    Posts: 10,586

    stillrunners
    Member
    from dallas

    Good chart but the Mopar info is off.......
     
  12. Beanscoot
    Joined: May 14, 2008
    Posts: 3,635

    Beanscoot
    Member

    Yep, and 1967 Fairlane is given as 59-1/4" or 63-1/2" with coil springs. Huh?

    Sadly those charts are constantly copied and never researched and corrected.
     
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