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Jul 21st, 2025 | | | | Joined: Dec 2008 Posts: 401 'Bolter | | 'Bolter Joined: Dec 2008 Posts: 401 | Next topic of question I want to look into is power steering. Where should I start looking for power steering options for my '56 1.5 ton bus? I have seen the power steering box at CPP with the hoses and brackets. Not sure if that is a good fit or if someone else has used it or something else? | | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | GM Saginaw boxes off GM trucks, full size Blazer, etc., have Pitman arms that move for and aft, or, side to side. What type of movement requirements do you have? Some '50's trucks had factory power steering-perhaps someone will pipe up.
One option would be to put the appropriate box ahead of the axle, several U-joints required in steering shaft.
Ed
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
| | | | | Joined: Jan 2013 Posts: 1,384 Shop Shark | | Shop Shark Joined: Jan 2013 Posts: 1,384 | On the same subject, any specific ideas on trucks that might donate for a COE (steeper mounting angle of the box)? | | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | If a modern Saginaw box has fore and aft Pittman arm movement, could one just move the arm on shaft?
I had forgot, I got a Dodge motor home chassis that had a modern Saginaw box mounted 90 degrees on a factory cast bracket(probably still have if you need a px) to rotate a stock box.
Easy to rotate Pittman arm, sit down with a 3 cornered file, file a new female spline in the skip spline location.
Ed
Last edited by EdPruss; 03/11/2017 4:25 PM.
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
| | | | | Joined: Mar 2016 Posts: 170 'Bolter | | 'Bolter Joined: Mar 2016 Posts: 170 | Some vans have reverse cut gears in the steering box too. That can keep you from needing to mount the box so far forward on the frame.
I swapped a solid axle into an S10 once, but doing so reversed the steering. So we just snagged an Astro box that was externally identical but internally reversed. Threw in a 76 Econoline pitman arm too, I believe. It may have had four skip splines already too, if I remember correctly.
I think the same swap ability exists with the full sized models. It may be worth looking into. | | |
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