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Ford 9" Rear Ends...

Discussion in 'The Hokey Ass Message Board' started by Royalé with cheese, May 30, 2012.

  1. Royalé with cheese
    Joined: Sep 27, 2007
    Posts: 17

    Royalé with cheese

    I was just wondering if all Ford 9" rear ends have the same wheel bolt patterns.

    Mine is from a '78 truck and I'll be getting new wheels so I'm wondering if any used 5-bolt wheel from a 9"er will fit.

    Thanks in advance for any help!
  2. JonF
    Joined: Mar 6, 2010
    Posts: 169


    Truck rear will be 5 on 5.5" bolt cocked.
  3. 54MEB
    Joined: Nov 21, 2007
    Posts: 107


    No, they will have several bolt patterns. Most cars had a 5 x 4.5" and as said the trucks have the 5 x 5.5". I believe there is also a 5 x 5" as well.
  4. grazy
    Joined: Jun 21, 2008
    Posts: 223


    Ford full size trucks and Broncos are 5 on 5 1/2 .The only ones that are not are small Rangers and Bronco II but they will not have a 9" late 60s early 70s F-100 and small Econoline and Falcon trucks will also have pass car 5 on 4 1/2 .
    Last edited: May 30, 2012

  5. squirrel
    Joined: Sep 23, 2004
    Posts: 47,498


    also late 70s Tbirds
  6. oldtom69
    Joined: Dec 6, 2009
    Posts: 529

    from grandin nd

    what was the first and last years ford made the 9"?['57 & ?]Did ford ever use the 9" in 3/4 or one ton trucks?
  7. squirrel
    Joined: Sep 23, 2004
    Posts: 47,498


    57-86 I'm pretty sure. Not in 3/4 tons, they used the Dana 60 or 60HD
  8. 31Apickup
    Joined: Nov 8, 2005
    Posts: 2,471


    1986 is the last year. The last years (79-86)was only in F-150's, Bronco's and Vans.
  9. trksmth
    Joined: Feb 10, 2009
    Posts: 372


    30 Years 1956 to 1986 is what I believe, have been told they run them is some 1987, but I've never seen one.
  10. I believe it was called the 9-3/8. Has a slightly larger ring gear, but the bolt pattern of the center section is the same as std 9-inch. So if you have one of those housings, you can bolt a std 9-inch center into it. But fitting a 9-3/8 center into a std 9-inch housing will not fit without grinding clearance on the mounting lip.
    Joined: Sep 28, 2014
    Posts: 12



    I have a 1962 Mercury Comet S-22 and I plan on installing a Ford 302 Engine in it this Spring. I want to ensure I pick the correct rear end for the engine and transmission. Can anyone tell me what year Ford 9" Rear End that will fit my Mercury with limited modifications, so I can start searching the junk yards? I plan on rebuilding the rear end from the inside out, however I'm not sure what range of years I should be searching for my car. i would like to have posi and disc brakes on the rear end

    Thanks for your advice and assistance!
  12. Jalopy Joker
    Joined: Sep 3, 2006
    Posts: 25,787

    Jalopy Joker

    yes, old thread but, info still needed. as for question posted by Newbie - no easy bolt in 9" , especially with disc brakes. Ford 8" possible width option and 8.8 possible option to get disc brakes. one source of Ford, and others, wheel bolt pattern sizes: and for rearend width info:
    Last edited: Feb 17, 2015
  13. I wouldn't get too hung up on a particular junk yard rear end. Find one that is the right width for the Comet and go from there. The 9" is the SBC of the rear end world. Endless aftermarket support, hundreds of different disc brake conversions, gear ratios, differential options, spring / shock mounts, etc.

    Interesting side note. It is true that the 9" was in production for 30 years, but the Dana 60 mentioned earlier in 3/4 Ton F-250's and 350's was in production even longer. They can be found under 3/4 tons from 1955 to 2011. A run of 56 years.
  14. You won't find a 9" under everything; Ford substituted 'other' rear axles starting in the 60s in both cars and trucks. They even sold optional 'heavy duty' rear axles (more heavy duty than the 9") in the 1/2T trucks which were Dana 60s with the 5-bolt wheel pattern. Very hard to find parts for these days....

    Rocket Man, unless you're installing a killer big-power 302 with big tires the Ford 8" would be enough. And while the options available for the 9" are nearly unlimited, don't expect it to be cheap; adding posi and disc brakes will up the ante by about $1K. The only 9" that was factory-equipped like that was the rare optional '78-79 Lincoln Versailles/Granada/Monarch unit, and these had troublesome brakes that are very expensive to rebuild.

    Best bet these days is the late 80s/early 90s Ford Explorer 8.8" rear; nearly as strong as the 9", lighter, many came with discs/posi, some are narrow enough to fit your Comet as-is, right bolt pattern (4.5" on 5) and they're cheap. Guys are picking these up for as little as $150. Because this is the rear used in 5.0 Mustangs, there's plenty of aftermarket support too.
  15. DDDenny
    Joined: Feb 6, 2015
    Posts: 14,335

    from oregon

    Rocketman--not that you would consider a Dana 60 (or even need one) for this car, if you do and you don't have a trans. jack, you better start pumping iron TODAY, cause they are HEAVY.
    I know, cause around 1970 a friend had a 66 hemi car that he campaigned in Super Stock D/stick,
    and even as a 250 pound, strong young'n it was a bitch to handle.

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