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  •  » FYI Ford, Classic Mustang Tech Discussion
  •  » Narrowing a 9” axle housing and custom springs

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    3/08/2023 6:24 AM  #1

    Nos681
    Senior 24-7 FYI Addict

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    From: Atlantic Mine, Michigan
    Registered: 7/14/2016
    Posts: 3,326

    Narrowing a 9” axle housing and custom springs

    I ran across this yesterday and thought I would share.
    I like the custom Eaton spring option for this build.

    https://www.motortrend.com/how-to/narrowing-9-inch-rearend-old-fashioned-way

    Last edited by Nos681 (3/08/2023 7:03 AM)

     

    3/08/2023 10:33 AM  #2

    red351
    I FYI 24-7

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    From: Carlisle, PA
    Registered: 5/31/2018
    Posts: 445

    Re: Narrowing a 9” axle housing and custom springs

    Narrowed a 9" for the 67 using a truck center section and tubes from the old 8" and then added 11" drum brakes off 75 Lincoln. Lots of stopping power, sometimes to much...

    Last edited by red351 (3/08/2023 10:34 AM)

     

    3/08/2023 10:53 AM  #3

    6sally6
    Hyper FYIFORD ADDICT

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    From: Surfside Beach,SC
    Registered: 4/02/2013
    Posts: 6,849

    Re: Narrowing a 9” axle housing and custom springs

    Give us a little 'mo info' Rich....... Did you grind out the welds on the truck section and slip in the 8" tubes?
    No shortening of the tubes?
    6s6

    Get busy Liv'in or get busy Die'n....Host of the 2020 Bash at the Beach/The only Bash that got cancelled  )8
     

    3/08/2023 12:47 PM  #4

    RTM
    Senior 24-7 FYI Addict

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    From: Cape Coral FL
    Registered: 5/22/2019
    Posts: 1,711

    Re: Narrowing a 9” axle housing and custom springs

    When I lived in Ohio there was a retired guy that built 9 inch third members and housings.  He would use the banjo style 9 inch housing and skip the 8 inch axle tubes inside the 9 inch banjo tubes near the center section.  He had done this for me on my old 65 fastback I built.  Looks pretty much identical to a hipo 65/66 housing.   The banjo style has a lot more clearance for exhaust clearance if you’re going up and over the axle. 

    I must have sold him 100 plus 9 inch axles and parts.  The junkyard I would visit every weekend would put every 9 inch axle aside for me.  The guy that worked there went by the name of Red.

     

    3/09/2023 8:59 AM  #5

    red351
    I FYI 24-7

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    From: Carlisle, PA
    Registered: 5/31/2018
    Posts: 445

    Re: Narrowing a 9” axle housing and custom springs

    6sally6 wrote:

    Give us a little 'mo info' Rich....... Did you grind out the welds on the truck section and slip in the 8" tubes?
    No shortening of the tubes?
    6s6

    I cut off the bigger tubes flush at the center section ends and the 8" tubes could be pressed inside. Using an I beam as a jig to measure off of, I could rotate everything to be sure it was straight before welding and after. Yes I did shorten the 8's some. I only needed 1" off each side to keep the tires from rubbing.

    I use the same jig setup and made a few driveshafts. It now just collects dust under the work bench.  No more cars for me

     

     

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