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Technical F100 Steering Box Install

Discussion in 'Traditional Hot Rods' started by 35joe, Mar 23, 2020.

  1. 35joe
    Joined: Nov 21, 2015
    Posts: 32

    35joe

    I am in need of a manual steering box that has a 7" span from the steering column shaft to the pitman arm. Similar to the F100 style. Problem is I need a reverse rotation. Pitman arm sitting outside the chassis.
    I tried to create cowl steering with a 39 Chevy box and failed miserably. Now I am in a tight spot. Can a steering box be used upside down? HELP!!!
     

    Attached Files:

  2. manyolcars
    Joined: Mar 30, 2001
    Posts: 8,164

    manyolcars

    town sedan and rwrj like this.
  3. 35joe
    Joined: Nov 21, 2015
    Posts: 32

    35joe

    Thank you for your reply. This is obviously getting ripped out. I will read prior to coming up with plan B.
    I do have room at outside of firewall for a box where the original column cutout is. Now that engine and body sit well.
    I would appreciate other steering options. Money is an issue.
     
  4. Jmountainjr
    Joined: Dec 29, 2006
    Posts: 904

    Jmountainjr
    ALLIANCE MEMBER

    Maybe you could post a picture or a diagram of the two locations that you are considering mounting the steering box. Also if the pitman arm will point up or down as that plays into rotation requirements.
     
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  5. DOCTOR SATAN
    Joined: Mar 21, 2014
    Posts: 712

    DOCTOR SATAN
    Member
    from okc

    Reverse the F100 box
     
  6. 35joe
    Joined: Nov 21, 2015
    Posts: 32

    35joe

    Space for box. Pitman down.
    Thx
     

    Attached Files:

  7. sdroadster
    Joined: Jul 27, 2006
    Posts: 265

    sdroadster
    Member

    This is a Chris Craft steering box that really is a Gremmer 48 Ford design. It takes an old Ford steering wheel, and pitman arm. The pitman would need to point up, to make the wheels turn the right direction when the steering wheel is rotated. PM me if interested. chris craft steering 003.JPG chris craft steering 007.JPG
     
  8. 35joe
    Joined: Nov 21, 2015
    Posts: 32

    35joe

    Message sent
     
  9. alchemy
    Joined: Sep 27, 2002
    Posts: 14,912

    alchemy
    ALLIANCE MEMBER

    I used a late 60's Mustang box for cowl steering (gasp!). I wanted the pitman to point down so I reversed the box, which involved plugging the original worm shaft hole with a welch plug and boring another hole out the other end. I got fancy and had my machinist buddy turn me a collar that held a seal and allowed the old Ford style column tube to be clamped to it.
     
    Ricco39ford likes this.
  10. 35joe
    Joined: Nov 21, 2015
    Posts: 32

    35joe

    Found a 60’s Chevy truck box that has a horizontal pitman shaft. If I turn the box so it’s vertical, will it work?
     
  11. Chalkie
    Joined: Apr 30, 2018
    Posts: 9

    Chalkie
    Member
    from England

    Fit Right hand drive worm drive in the left hand drive box that give reverse turn or vice versa.

    I could be wrong but I'm sure I read that somewhere. Anyone wants to correct me fire away. Thanks Stephen.
     
  12. Andy
    Joined: Nov 17, 2002
    Posts: 4,516

    Andy
    Member

    No
     
  13. 35joe
    Joined: Nov 21, 2015
    Posts: 32

    35joe

    What do you mean by reversing the f100 box?
     
  14. Inked Monkey
    Joined: Apr 19, 2011
    Posts: 1,712

    Inked Monkey
    Member

  15. DOCTOR SATAN
    Joined: Mar 21, 2014
    Posts: 712

    DOCTOR SATAN
    Member
    from okc

    Did you find your answer....?
     
  16. DOCTOR SATAN
    Joined: Mar 21, 2014
    Posts: 712

    DOCTOR SATAN
    Member
    from okc

    hey inked monkey, how'd ya like that reversed f100 box cowl steer setup???
     
  17. Inked Monkey
    Joined: Apr 19, 2011
    Posts: 1,712

    Inked Monkey
    Member

    @DOCTOR SATAN It wasn't bad. I had to lengthen my pitman arm which made the steering a little too quick, but it wasn't that big of a deal. Drove a couple thousand miles with it over a year. Switched to a traditional setup using an F1 box because somebody gave me the box.
     
  18. 35joe
    Joined: Nov 21, 2015
    Posts: 32

    35joe

    Nice RPU!
     
    Inked Monkey likes this.
  19. 35joe
    Joined: Nov 21, 2015
    Posts: 32

    35joe

    Why did you have to lengthen the pitman arm? How'd ya do it? And why does that make the steering "quicker"?
     
  20. alchemy
    Joined: Sep 27, 2002
    Posts: 14,912

    alchemy
    ALLIANCE MEMBER

    I think you probably should do a bit of learning before you do some assembling. The basic concepts of geometry play a huge part in how a steering system works. Think about it for a bit, and make some models from pop-sickle sticks and pins if need be. Try different length arms (pop-sickle sticks) and watch how the driven arm moves faster when the driving arm is longer.
     
    rpm56 and town sedan like this.
  21. Inked Monkey
    Joined: Apr 19, 2011
    Posts: 1,712

    Inked Monkey
    Member

    @35joe My box was mounted pretty high in the cowl. Like @alchemy said, just draw a little doodle or get some sticks. The box is turning the regular amount but with a longer pitman arm the end is moving farther than stock. That means when you turn the wheel a little the steering is moving faster than before. I had to lengthen my arm due to where I had the box mounted. If you place it lower in the cowl, then you might not have too. There's pics in my build thread if you're interested, but I did just switch it all out.
     
  22. 35joe
    Joined: Nov 21, 2015
    Posts: 32

    35joe

    I mis-read the post, thinking the pitman arm shaft was lengthened. Duh. All of my steering is removed. I am in persuit of the F100 box thinking that that one has the greatest distance between the steering shaft and pitman arm. I need 7". Thx.
     
    Inked Monkey likes this.
  23. 35joe
    Joined: Nov 21, 2015
    Posts: 32

    35joe

    Anyone have a pitman arm for sale?
     

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