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Technical 6x5.5 on 39-41 ford spindles

Discussion in 'Traditional Hot Rods' started by ScottNZ, Oct 21, 2025.

  1. ScottNZ
    Joined: Jan 20, 2025
    Posts: 8

    ScottNZ
    Member

    Hi everyone, I’m looking for a way of possibly using some 6x5.5 wheels I already have and using a mix of parts to get them on some early ford spindles for a traditional hotrod. Cutting out the centre of the wheel and changing the stud pattern is not an option here in NZ legally. Ive been looking into using GM rotors with a speedway motors bearing adapter made for these spindles, and then figuring out bearings etc but just wondering if anyone here has done this before?
     
  2. dirt t
    Joined: Mar 20, 2007
    Posts: 5,392

    dirt t
    Member

  3. treb11
    Joined: Jan 21, 2006
    Posts: 4,126

    treb11
    ALLIANCE MEMBER

    Speedway kit 91031909 uses 5 lug 1/2 ton Ford rotors. If you can find tbe 6 lug equivalent rotor, that might work
    Expensive alternate is the Wilwood kit and custom order with the hub drilled for 6 lugs. BUT is the bolted rotor/hub legal for you?
    Is re-drilling a rotor an option?
     
    ScottNZ likes this.
  4. Johnny Gee
    Joined: Dec 3, 2009
    Posts: 14,352

    Johnny Gee
    Member
    from Downey, Ca

    I’m lost as to why 6 lug. You mention the spindles but what is the vehicle exactly?
     
  5. ScottNZ
    Joined: Jan 20, 2025
    Posts: 8

    ScottNZ
    Member

    The why is irrelevant. I'm trying to make use of what I have and put something together that works (isn't that what hotrodding is all about?!) Traditional Ford front end setup on a '28 Studebaker Commander
     
    seabeecmc likes this.
  6. Johnny Gee
    Joined: Dec 3, 2009
    Posts: 14,352

    Johnny Gee
    Member
    from Downey, Ca

    I’m only trying to understand why 6 lug vs 5 is all.
     
  7. ScottNZ
    Joined: Jan 20, 2025
    Posts: 8

    ScottNZ
    Member

    Trust me if I could go back and order the wheels in 5 stud I would, I had them custom made by mobsteel for another project that I ended up ditching and I want to use them on this now
     
    Johnny Gee likes this.
  8. We’re converting 5x5.5 to 6x5.5 on 9 inch ford axles. Welding, facing on a lathe and re-drilling
    Can you do that to a front hub and use a hat style rotor?
     
  9. Johnny Gee
    Joined: Dec 3, 2009
    Posts: 14,352

    Johnny Gee
    Member
    from Downey, Ca

    That clears up the New Zealand motor inspection issue. :)
     
  10. ScottNZ
    Joined: Jan 20, 2025
    Posts: 8

    ScottNZ
    Member

    For anyone interested the solution was as follows: 1965 C10 rotors from a disc conversion kit (others would work too), the early ford to GM bearing adapter from speedway, inner bearing Timken lm48548/lm48510 and outer bearing Timken lm11949/lm11910. Now I’ll make a caliper bracket to suit.
     
  11. Jmountainjr
    Joined: Dec 29, 2006
    Posts: 1,897

    Jmountainjr
    ALLIANCE MEMBER

    Scott, thanks for the update with parts info. Someone that has some Chevy 6 lug artillery wheels, or other 6 lug wheels, might want to do something like that.
     
  12. Andy
    Joined: Nov 17, 2002
    Posts: 5,389

    Andy
    Member

    I had a Mullins trailer with 6 lug wheels. I think that was stock. Someone said 40 hubs would fit with no problems. They did and I used some 56 F100 wheels. Old Chevy hubs may be an .option.
     

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