Another highboy power steering thread..
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Post Fiend
Joined: Oct 2009
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From: town of less than 200 ppl
Another highboy power steering thread..
The garrison unit on my highboy is leaking (surprise, surprise..) and I can't afford to replace it with a rebuilt unit. I have a 78 f150 4x4 parts truck with complete steering set up. I was wondering what it would require to use the 78 4x4 steering box on my 74 highboy? Could I use the 4x4 steering box with 2wd internals and reverse the pitman arm 180*? If I'm thinking correctly, that would get the rotation correct, and I would be able to more-or-less bolt it in where the current box is, without too much modification. If there is a write-up on using a 78/9 f150 4x4 box I would love to read it, but I'm not finding any threads with specific enough information for me. Thanks for any help.
Ford Parts Specialist
Joined: Nov 2006
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From: Simi Valley, CA
The manual steering gearbox is used, as it has nothing to do with Power Assist.
Garrison Power Assist P/S: 1973/75 F100 4WD / 1975 F150 4WD // 1973 F250 4WD / 1974 F250 4WD before serial number T80,001.
Why go thru the intensive labor process of swapping in Ford integral P/S when the Garrison seal kits are available?
D3TZ-3A650-A .. Garrison Power Assist P/S Control Valve Seal Kit / Obsolete
JST AUTOMOTIVE in Lebanon TN has 1 = 615-443-3086.
WESLEY OBSOLETE PARTS in Liberty KY has 1 = 606-787-5293.
ANTIQUE AUTO SUPPLY in Arlington TX has 1 = 817-275-2381.
WILLEY INC. in Ames IA has 1 = 515-233-1913.
LYLE'S FORD in Eagle Grove IA has 1 = 800-397-6319.
CROSSETT FORD in Crossett AR has 3 = 870-364-2162.
-----------------------------------------------------
D3TZ-3A764-A .. Garrison Power Assist P/S Ram Cylinder Seal Kit / Obsolete
JST AUTOMOTIVE has 1.
SHOWALTER MOTOR CO. in Vernal UT has 1 = 435-789-3818.
GREEN SALES CO. in Cincinnati OH has 4 = 800-543-4959.
CARPENTER NOS OBSOLETE PARTS in Concord NC has 6 = 800-476-9653.
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Post Fiend
Joined: Oct 2009
Posts: 8,674
Likes: 0
From: town of less than 200 ppl
What "rebuilt" unit are you referring to? With Power Assist, the control valve and ram cylinder are separate parts.
The manual steering gearbox is used, as it has nothing to do with Power Assist.
Garrison Power Assist P/S: 1973/75 F100 4WD / 1975 F150 4WD // 1973 F250 4WD / 1974 F250 4WD before serial number T80,001.
Why go thru the intensive labor process of swapping in Ford integral P/S when the Garrison seal kits are available?
D3TZ-3A650-A .. Garrison Power Assist P/S Control Valve Seal Kit / Obsolete
JST AUTOMOTIVE in Lebanon TN has 1 = 615-443-3086.
WESLEY OBSOLETE PARTS in Liberty KY has 1 = 606-787-5293.
ANTIQUE AUTO SUPPLY in Arlington TX has 1 = 817-275-2381.
WILLEY INC. in Ames IA has 1 = 515-233-1913.
LYLE'S FORD in Eagle Grove IA has 1 = 800-397-6319.
CROSSETT FORD in Crossett AR has 3 = 870-364-2162.
-----------------------------------------------------
D3TZ-3A764-A .. Garrison Power Assist P/S Ram Cylinder Seal Kit / Obsolete
JST AUTOMOTIVE has 1.
SHOWALTER MOTOR CO. in Vernal UT has 1 = 435-789-3818.
GREEN SALES CO. in Cincinnati OH has 4 = 800-543-4959.
CARPENTER NOS OBSOLETE PARTS in Concord NC has 6 = 800-476-9653.
The manual steering gearbox is used, as it has nothing to do with Power Assist.
Garrison Power Assist P/S: 1973/75 F100 4WD / 1975 F150 4WD // 1973 F250 4WD / 1974 F250 4WD before serial number T80,001.
Why go thru the intensive labor process of swapping in Ford integral P/S when the Garrison seal kits are available?
D3TZ-3A650-A .. Garrison Power Assist P/S Control Valve Seal Kit / Obsolete
JST AUTOMOTIVE in Lebanon TN has 1 = 615-443-3086.
WESLEY OBSOLETE PARTS in Liberty KY has 1 = 606-787-5293.
ANTIQUE AUTO SUPPLY in Arlington TX has 1 = 817-275-2381.
WILLEY INC. in Ames IA has 1 = 515-233-1913.
LYLE'S FORD in Eagle Grove IA has 1 = 800-397-6319.
CROSSETT FORD in Crossett AR has 3 = 870-364-2162.
-----------------------------------------------------
D3TZ-3A764-A .. Garrison Power Assist P/S Ram Cylinder Seal Kit / Obsolete
JST AUTOMOTIVE has 1.
SHOWALTER MOTOR CO. in Vernal UT has 1 = 435-789-3818.
GREEN SALES CO. in Cincinnati OH has 4 = 800-543-4959.
CARPENTER NOS OBSOLETE PARTS in Concord NC has 6 = 800-476-9653.
Thread Starter
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Post Fiend
Joined: Oct 2009
Posts: 8,674
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From: town of less than 200 ppl
Tempting offer.. but I think I want to do the conversion, too.
Post Fiend
Joined: Apr 2008
Posts: 8,261
Likes: 15
From: Big Sky Country
Thread Starter
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Post Fiend
Joined: Oct 2009
Posts: 8,674
Likes: 0
From: town of less than 200 ppl
Did you miss the part where it says "not available at this time"? I have been there multiple times. I do not want to rebuild the power assist system, I want to upgrade it to full integrated power steering. Basically, I want to use what I already have to get power steering in my highboy.
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Post Fiend
Joined: Apr 2008
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From: Big Sky Country
Looks like he sold out. 
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Post Fiend
Joined: Oct 2009
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From: town of less than 200 ppl
See I don't want to track down any more parts. I want to use the power steering system that is on the 78 f150. I already own it, and it won't cost me anything in that regard. I'm a broke college student (huge emphasis on the broke part).
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Post Fiend
Joined: Oct 2009
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From: town of less than 200 ppl
Yes the f150 box mounts to the outside of the frame. I am going to get it all next to my highboy and take a closer look.. I know it can be done, I know someone that has done it.. I just don't have their phone number so I can't call him up to get his advice. I did talk to him just yesterday actually (sold him a grille) and he said that it was really pretty easy to do. He highly suggested using the 78 steering on my highboy. Going to see if I can't contact him and get his help. Thanks anyways guys.
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