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Hot Rods Rear axles

Discussion in 'The Hokey Ass Message Board' started by HOTRODPRIMER, May 8, 2019.

  1. We have all seen the charts with the widths of different make rear axles and they really help when try to determine what will work under the car you are building, but is there a make that you prefer over all the rest?

    I found one that I really like for Deuces, the 66-77 Ford Bronco is a the perfect width and the bolt pattern is 5 on 5 1/2 , I like the fact that it is the same pattern as the early 40 Ford front drums. HRP
     
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  2. AngleDrive
    Joined: Mar 9, 2006
    Posts: 827

    AngleDrive
    ALLIANCE MEMBER
    from Florida

  3. dana barlow
    Joined: May 30, 2006
    Posts: 4,057

    dana barlow
    Member
    from Miami Fla.
    1. Y-blocks

    Now days it's fairly EZ to find the list of sizes and brands,to make pick for your needs. And lots of rims too pick also.<But some get stuck on the idea of using what ever rim already have !
    In the late 50s,I had two things that were key,#1 what can I find free ,and #2 what is the strongest one of them.

    ! There was no worry about how wide,we just made sure to get rims with a off set or in set, to put the tire were it would work,some times that made you need to move the rim center over. So the rear I could find for free in 1959 was a 50 Olds=very heavy duty,plus had what we now call truckarms stock,making it EZer to mount. Some years later I sold rear to a drag racer,an used a 65 Mustang that was free.
     
    Last edited: May 8, 2019
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  4. DDDenny
    Joined: Feb 6, 2015
    Posts: 13,811

    DDDenny
    Member
    from oregon

    Nine inch Ford out of 57 half ton pickup.
    To my knowledge, the widest of the nine inch housings and I still had to add an inch to one side due to my wheels having so much backspace.
    20170326_094304.jpg
     

  5. Joel W
    Joined: Jan 4, 2010
    Posts: 100

    Joel W
    Member

    8 3/4 Mopar, the one out of darts and dusters (A bodies) is about perfect width for 28-34 cars and stout too.
     
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  6. Rex_A_Lott
    Joined: Feb 5, 2007
    Posts: 1,018

    Rex_A_Lott
    ALLIANCE MEMBER

    I've got a 67 Bronco rear put back for an A model, would be good for a 32 also.
    But to be honest, the days of junkyard scrounging are about over. The last few years I raced , I used Speedway Engineering. You call them up, give them the measurements you need and they build it. You can get the housing width you want, bolt pattern you want, floating axles, gun drilled axles, quick change, you name it, they build it. Yeah, it comes at a price, but to me it was one place I got what I paid for. YMMV. Good luck.
     
  7. 3W JOHN
    Joined: Oct 8, 2015
    Posts: 701

    3W JOHN
    Member

    I've had good luck with the early mustangs.
     
  8. 3banjos
    Joined: May 24, 2008
    Posts: 471

    3banjos
    Member
    from NZ

    So why do most people think they really need a 9".
     
  9. Finding old (pre 65) usable stuff in a junk yard is rare.

    It’s the absolute most popular, most mentioned, most after market support.

    Monkey see monkey do.
    Monkey hear monkey want.
    Good for one monkey good for next monkey too.

    Because of the popularity and aftermarket support it’s really nice to be able to get exactly what you want. And a fella could have a few easily swapped out gear ratio chunks on the shelf. change your mood and change your gear ratios
     
  10. Bandit Billy
    Joined: Sep 16, 2014
    Posts: 6,887

    Bandit Billy
    ALLIANCE MEMBER

    Because they run HEMI's :cool:
     
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  11. 3banjos
    Joined: May 24, 2008
    Posts: 471

    3banjos
    Member
    from NZ

    31Vicky, agreed. After-market support is there. Monkey see Monkey do. I know a handful of hotrodders where an 8" would more than suffice, the duties required of their cars.
     
  12. I used a 8" Mustang rear axle under the wagon, I use a 9" under the Deuces primarily because the size fit's perfectly with no alterations and bolt pattern is the 5 x 5 1/2 so the early wheels fit and match the spindles up front.

    I have been building hot rods for almost 50 years and during that time I have amassed several spare rear axles. Bronco, Maverick & Mustang.

    Granted the junk yards are drying up but there are still parts cars to be found. HRP
     
    Last edited: May 9, 2019
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  13. Bandit Billy
    Joined: Sep 16, 2014
    Posts: 6,887

    Bandit Billy
    ALLIANCE MEMBER

    I agree fully. It is the same as the T-5 argument, you can shred them behind a strong engine and a heavy foot, they will last fine and give many a cruising mile in a more friendly environment. I plan to drive my shop truck pretty hard, I chose a fine splined, posi, 9 inch for that reason.

    Back to the topic, I went with a narrow rear end at 56.5" (out of a maverick prostreet). I am going to run (probably) artillery wheels and I will have custom back spacing done to center my tires/wheels without spacers and allow for some pretty large tires in the back. In case you don't know, TRU SPOKE (yeah, those guys) offers artillery wheels with custom spacing per the chart below. $15 per wheel for custom spacing.
    upload_2019-5-9_11-57-7.png
    Good thread HRP. I did a lot of research before I invested in that rear end. Nothing ruins the look of a car faster than having the tires either hanging out of the fenders or looking like they were swallowed up in a cavern.
     
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  14. DDDenny
    Joined: Feb 6, 2015
    Posts: 13,811

    DDDenny
    Member
    from oregon

    If an 8 inch rear axle is all you need then you need more horsepower!
     
  15. The Ford 8" is torque limited, which is why Ford almost never used it behind anything larger than a 302 (they did use it behind some 351s shortly before the motor disappeared in passenger cars, but these were badly smogged and down on power). The pinion bearings are what's suspect. They'll hold a pretty hot 289/302 though and use the same 28 spline axles as the 9".

    These days, I'd give serious thought to the Ford 8.8... Doesn't have a removable pumpkin, but it's nearly as strong as a 9", lighter, and there's a zillion of 'em in the yards for cheap.
     
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  16. I’m a big fan of the 8.8!
    The explorer unit is not light, FAR from it.
     
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  17. AldeanFan
    Joined: Dec 12, 2014
    Posts: 613

    AldeanFan

    8.8 is my choice,
    Cheap and available


    Sent from my iPhone using Tapatalk
     
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  18. 41rodderz
    Joined: Sep 27, 2010
    Posts: 5,207

    41rodderz
    Member
    from Oregon

    To me it is what I have and meets my needs. I have a 12 bolt, 9 inch, 10 bolts and my 8 3/4 3:55 Suregrip out of my 1970 Duster . I did trade my quick change. :oops:
     
    Last edited: May 9, 2019
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  19. PHIL COOPY
    Joined: Jul 20, 2016
    Posts: 409

    PHIL COOPY
    Member Emeritus

    DANA44 from a CJ5 is a good choice, narrow and has 5/5 1/2 flange.
     
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  20. GearheadsQCE
    Joined: Mar 23, 2011
    Posts: 2,553

    GearheadsQCE
    Member

    [​IMG]

    [​IMG]

    Any width!
    Any bolt pattern!
    Any ratio!
    Any Questions?
    Close the Thread :D
     
    Last edited: May 12, 2019
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  21. krylon32
    Joined: Jan 29, 2006
    Posts: 6,657

    krylon32
    Alliance Vendor
    from Nebraska

    Gave up on junkyard rears 20 years ago. Used to call Currie and now I call John's for a nice clean new housing and 31 spline axles the right width and bolt pattern for each individual project. Not much more money than I had in junkyard rear by the time I sand blasted, de greased, shortened and resplined them. Plus they're delivered to my shop without any running around.
     
  22. The first rearend I ever changed was when I put a Mustang 8inch under my deuce coupe. It fit well and its not a drag racer so I didn't need brute strength. I liked the Ford 8inch ever since. I put a 9inch under my 34 pickup but thats because I had a 57 Ford parts car and the fit was perfect. Both the 8 and 9 inch gives the popular Ford/Mopar bolt pattern. I would like to find a Bronco 9 inch but those are as rare as hens teeth.
     
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  23. BamaMav
    Joined: Jun 19, 2011
    Posts: 4,451

    BamaMav
    Member
    from Berry, AL

    That chart that you find everywhere on the web is a good start, but there are several errors in it, you still need to measure to make sure it fits your application. I’ve related the tale of the too narrow 4 lug Mustang II that was in my car when I got it, I set my tires under the fenders after I had yanked it out and measured from wheel face to wheel face to get an idea of what I needed. I wanted a 60” wide rear, but few were made, I settled on a 59 1/2” Fairlane 8” because it was local and it was cheap. Next wheels will have a little different spacing to get the look I want. A bonus to using the 2:79 Fairlane 8” was that not only did I have the 3:55 MII Gear set, I also had an optional Maverick 3:00 set, so I could play with the gearing.
    I like the smooth look of the old 8” and 9” rears, but the 8” is fine for a cruiser like mine.
     
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  24. jimmy six
    Joined: Mar 21, 2006
    Posts: 7,187

    jimmy six
    Member

    8.8's have widths down to 56-1/2" and lots of gear options especially with OD transmissions...They also have a better pinion placement for resistance. I used 11 x 2-1/4"" F-150 brakes on mine.
     
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  25. Because they have the ratios that everyone thinks they might need.
     
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  26. big duece
    Joined: Jul 28, 2008
    Posts: 6,024

    big duece
    Member
    from kansas

    Easier to find in the salvage yard...
     
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  27. gimpyshotrods
    Joined: May 20, 2009
    Posts: 17,678

    gimpyshotrods
    ALLIANCE MEMBER

    I haven't seen one in a yard in over a decade.
     
  28. big duece
    Joined: Jul 28, 2008
    Posts: 6,024

    big duece
    Member
    from kansas

    Still a lot of them here in the midwest. Salvage yard in the next small town over has at least 30 of them, I have walked that yard for years. Hardly any 8" though. No Mustangs, Mavericks, Granada's or other donors that the 8" came from.
     
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  29. Vans and pickup trucks ?
    Great big ones that need narrowed and axles
    Or early broncos that just work
     
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  30. big duece
    Joined: Jul 28, 2008
    Posts: 6,024

    big duece
    Member
    from kansas

    Big trucks, the Bronco stuff is pretty thin here.
     
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