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Hot Rods Gasser steering box / traditional steering

Discussion in 'The Hokey Ass Message Board' started by d55dave, Dec 8, 2019.

  1. d55dave
    Joined: Dec 29, 2017
    Posts: 14

    d55dave
    Member
    from Kelowna BC

    So I have secured a 52 GMC front I beam to use in my 50 Dodge gasser, and want to stay with traditional steering.

    The corvair reversed steering box looks like an easy option, but I suspect that it will be too light weight as I will be running an all iron big block mopar and may see some wheels up time.

    What steering boxes have people used in this application? I can locally pick up two used jeep cj manual boxes for cheap and think that I can make one work.

    Has anyone ever used a cj box? Anyone ever reversed boxes other than the corvair?
     
  2. GM 525 box,...with Speedway steering components for cross steer. 37 coupe build 217.jpg
     
  3. d55dave
    Joined: Dec 29, 2017
    Posts: 14

    d55dave
    Member
    from Kelowna BC

    What I beam is that, are the speedway steering arms a bolt on for 52 GMC drum brakes?
     
  4. grimmfalcon138
    Joined: Jan 14, 2010
    Posts: 164

    grimmfalcon138
    Member
    from az

    Relocated Mopar a body manual box. IMG_20191208_111254.jpg
     

  5. d55dave
    Joined: Dec 29, 2017
    Posts: 14

    d55dave
    Member
    from Kelowna BC

    I like it, would love to stay with a mopar box.
     
    oldiron 440 likes this.
  6. oldiron 440
    Joined: Dec 12, 2018
    Posts: 2,226

    oldiron 440
    Member

    Easy to find and cheap! I always like easy and cheap in the same sentence.......:)
     
    d55dave likes this.
  7. squirrel
    Joined: Sep 23, 2004
    Posts: 49,267

    squirrel
    Member

    since when are those Mopar manual boxes cheap and easy to find? :) Plus you have to build a really wild bracket to mount it to a frame rail.

    The GM truck spindles look a lot like 49-54 chevy car spindles, at least how the backing plate bolts on. So I would not be surprised of those steering arms are a bolt on.

    Wonder what the Jeep boxes are? perhaps they look a lot like the 525 box, when you set them side by side?
     
  8. grimmfalcon138
    Joined: Jan 14, 2010
    Posts: 164

    grimmfalcon138
    Member
    from az

    Squirrel is correct. They are not cheap or easy these days, and the bracket is a little ridiculous. It basically boils down to its what I had so I used it...... So I guess it was cheap and easy for me.
     
  9. ...that's a 37 Chevy coupe axle pictured above with 54 Chev pass. car brakes bolted onto the 37 spindle, all steering components are Speedway bolt on parts, should work on your truck axle as well with the car brakes.
     
    CPT_Kill_Roy likes this.
  10. d55dave
    Joined: Dec 29, 2017
    Posts: 14

    d55dave
    Member
    from Kelowna BC

    Awesome, thanks. I will have my axle home in a few days and will do some measuring to see if the speedway arms will fit. I see they have a few different ones.
     
  11. LM14
    Joined: Dec 18, 2009
    Posts: 1,937

    LM14
    Member Emeritus
    from Iowa

  12. Mr48chev
    Joined: Dec 28, 2007
    Posts: 29,562

    Mr48chev
    ALLIANCE MEMBER

    When you swap the car backing plates and hubs to the truck spindles to get 5 lug hubs (trucks have 6 lug) you have to drill two holes in the car backing plate to bolt it to the truck spindle and use some spacers between the backing plate and spindle. I'm thinking that the top bolts bolt right in place without an issue as it was 1989 the last time I did one. I just used the bolt holes in the spindle as a guide to drill the holes in the backing plates after the backing plate was bolted on.
    The arms bolt on This is what I found on the speedway page. https://www.speedwaymotors.com/Speedway-Chevy-Spindle-Flat-Plate-Steering-Arms-Plain,3300.html
    A Corvair box is just not strong enough for that full size car even though there are always some self styled "experts" that suggest them. There are a number of manual boxes that will bolt to the frame with a simple flat plate and fit and work great Some of the Ford ones put the actual gear box above the frame rail where it might give you more header clearance unless you are running fenderwells.
     
  13. oldiron 440
    Joined: Dec 12, 2018
    Posts: 2,226

    oldiron 440
    Member

    They are that hard to find, I guess my price should go up ten times then because I've been getting 20 bucks for them.
    Thanks
     
  14. Those flat plate arms limit you to Heim ends. If you use one of those tie rod ends with a tapered hole for the drag link; you could very well retain the stock steering arms. I don't know if the taper is different on the truck arms; but the car arms I had needed to be reamed out to the larger Ford taper.

    Someone gave a 525 appearing box they said was Jeep; it had a short input shaft and a quicker ratio then a regular Chevy 525 box.
     
  15. jimmy six
    Joined: Mar 21, 2006
    Posts: 9,466

    jimmy six
    Member

    I use a Corvair box stock mounted in front of the axle. The spindles are 62 Corvette with bolt on arms facing rear(stock position) tied with 5/8” rod ends. There is a purchased arm (Speedway) mounted to the right spindle and the tie line is 1/2” pipe with 5/8” rod ends that steers in front, almost over the top of the axle. The stock box works great like this.
    Brakes are also 62 Corvette. The photo is tough to see all of it since it’s all painted black. Engine is a 302 GMC 6 all iron and probably heavier than what you have. F893D05B-CBA6-40E4-AA4A-F5AF295AE460.jpeg 37E05D83-6817-4800-9B4B-82C0FEA7643A.jpeg
     
    METAL MELTDOWN and d55dave like this.
  16. d55dave
    Joined: Dec 29, 2017
    Posts: 14

    d55dave
    Member
    from Kelowna BC

    Thank you for the info. Were all GMC trucks 6 bolt in 52-53? Yes, after some research I agree that the corvair box is just too lightweight. I will be running fenderwell headers.
     
  17. d55dave
    Joined: Dec 29, 2017
    Posts: 14

    d55dave
    Member
    from Kelowna BC

    I am getting all of the steering linkage from the truck and was hoping to use it. This is why I wanted a traditional horizontal shaft steering box to mate with the steering linkage on the drivers side via a fore and aft rod from the pitman arm, as the original gmc truck used.
     
  18. squirrel
    Joined: Sep 23, 2004
    Posts: 49,267

    squirrel
    Member

    Half tons were 6 lug, through 1970.
     
  19. For side steer you would have to mount the box and pitman arm in almost the exact position in relationship to the springs and axle as it was in the truck to get the geometry right.
    Cross steer would give much more latitude in mounting the box (and other stuff) and would be much more forgiving geometry wise.
     
  20. wvenfield
    Joined: Nov 23, 2006
    Posts: 5,316

    wvenfield
    Member

    I used the same axle as you have. I used the factory Pontiac box. Cross steer. Easy. It was getting the headers around the box that wasn't easy.
     
  21. I’ll take all you got at $20
     
  22. oldiron 440
    Joined: Dec 12, 2018
    Posts: 2,226

    oldiron 440
    Member

    Apparently I've been giving them away.
     
  23. grimmfalcon138
    Joined: Jan 14, 2010
    Posts: 164

    grimmfalcon138
    Member
    from az

    Hell, if you are giving them away? I'll be nice enough to cover the shipping.
     
  24. d55dave
    Joined: Dec 29, 2017
    Posts: 14

    d55dave
    Member
    from Kelowna BC

    Awesome, what did you do for steering arms? Did you upgrade the brakes or use the stock truck drums?
     
  25. About as traditional as you can get!!
    PA070007.JPG
    Merkel66NatsMedium.jpg
    hrdp_1211_12_1967_willys_show_rod_jade_jewel_.jpg
    hrdp_1211_14_1967_willys_show_rod_jade_jewel_.jpg
    Catch Me 9.jpg
     
    Last edited: Dec 9, 2019
    31Vicky with a hemi likes this.
  26. wvenfield
    Joined: Nov 23, 2006
    Posts: 5,316

    wvenfield
    Member

  27. krgdowdall
    Joined: Apr 3, 2015
    Posts: 108

    krgdowdall
    Member
    from Alberta

    Jeep used the Saginaw 525 steering box on quite a few models in the 70-80's . Probably worth picking up if the price is right .
     
  28. Jmountainjr
    Joined: Dec 29, 2006
    Posts: 1,364

    Jmountainjr
    ALLIANCE MEMBER

    "the tie line is 1/2” pipe with 5/8” rod ends that steers in front,"
    I hope that "pipe" was just a loose term used in your description and that the tie rod is actually DOM or some suitable material.
     
    seb fontana likes this.
  29. d55dave
    Joined: Dec 29, 2017
    Posts: 14

    d55dave
    Member
    from Kelowna BC

    Thanks. I picked up the axle tonight, it all looks good. This axle has a steering arm on each backing plate that are joined with a one piece center link, and the driver sside steering arm has a second arm that connects to the fore and aft steering rod i the stock truck. You say you are cross steer, what does the pitman arm to wheel tie rod fasten to on the passenger wheel?
     
  30. d55dave
    Joined: Dec 29, 2017
    Posts: 14

    d55dave
    Member
    from Kelowna BC

    IMG_20191210_184353.jpg IMG_20191210_184400.jpg IMG_20191210_184353.jpg So I picked up my axle tonight, I am pretty stoked. Here is what I got for $125 Canadian. It is complete with leaf springs and brake assemblies with five stud drums, they measure out to standard chev 5 on 4.75 bolt circle.

    Tomorrow I will pick up the jeep steering box, mounting bracket and pitman arm for $50.

    I cant wait to get to work on it!
     
    Last edited: Dec 10, 2019

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