Difference between '65 - '69 PS box and '70 - 73?

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  • J20DAN
    232 I6
    • May 12, 2002
    • 168

    Difference between '65 - '69 PS box and '70 - 73?

    Can anyone tell me the difference between the PS boxes between the earlier '65-'69 Saginaws and the later '70 - 73, maybe later, parts book only goes to /73. Very different part #s. Will the later fit the earlier?
    1979 J20, Firecraker Red
  • Cliff
    350 Buick
    • Mar 30, 2002
    • 864

    #2
    Priot to 1972 AMC was using the Eaton PS pump. Did Jeep always use the Saginaw?
    Cliff Danley
    1977 Cherokee S

    Comment

    • J20DAN
      232 I6
      • May 12, 2002
      • 168

      #3
      Thanks
      1979 J20, Firecraker Red

      Comment

      • Cliff
        350 Buick
        • Mar 30, 2002
        • 864

        #4
        Wait - I wasn't even thinking of the Buick 350 which would have used the Saginaw. But while the pumps may be same or similar obviously the brackets wouldn't be.
        Cliff Danley
        1977 Cherokee S

        Comment

        • tgreese
          • May 29, 2003
          • 11682

          #5
          I presume the OP means the steering gear, not the steering pump. Jeep calls this a "steering gear assembly." Pretty sure "steering box" is a colloquial term. I expect you could use either the Eaton or Saginaw pump for a Saginaw gear.

          For power steering gears, the parts book just gives a part number, not much else. Since it was used through '69, I would also presume that it's a Saginaw type and not the 230-era Ross unit. I believe you can tell something about the unit from the numbers cast in to the housing, if someone on here has a representative unit they can look at.
          Last edited by tgreese; 10-22-2021, 12:07 PM.
          Tim Reese
          Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS, hubcaps.
          Browless and proud: '82 J20 360/T18/NP208/3.73, Destination ATs, 7600 GVWR
          Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
          GTI without the badges: '95 VW Golf Sport 2000cc 2D
          ECO Green: '15 FCA Jeep Cherokee KL Trailhawk

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          • drcom
            258 I6
            • Oct 02, 2011
            • 259

            #6
            I have a 1970 Wagoneer with the Buick 350. Is there anything I can do to help? My steering box has the adjustment on the top that I see with the Saginaw boxes. I am guessing that makes it a Saginaw ? If there is a part number, I can take a scrub brush and go looking or take pictures. My wagon was made 9/1969 and therefor is considered a 1970 model with the custom designation. Power steering and power brakes.
            1970 Wagoneer Custom (9/1969)
            Original Arizona Jeep
            Buick 350/TH400/Dana20
            Early model with razor grill
            Spring Green exterior (original)

            Custom series interior

            Comment

            • J20DAN
              232 I6
              • May 12, 2002
              • 168

              #7
              Dr. Com if you can take a photo of your brake pedal assembly that would be helpful, so I can see what the difference is between 1970 and 1973.

              Thanks
              1979 J20, Firecraker Red

              Comment

              • drcom
                258 I6
                • Oct 02, 2011
                • 259

                #8
                Sorry, I was down for a while but I am back. I will take a picture tomorrow and post. Do you want the brake pedal or power steering ? I am getting ready to put in the adapter on my brake pedal to move the brake switch from the bottom of the master cylinder to the inside brake pedal.
                1970 Wagoneer Custom (9/1969)
                Original Arizona Jeep
                Buick 350/TH400/Dana20
                Early model with razor grill
                Spring Green exterior (original)

                Custom series interior

                Comment

                • J20DAN
                  232 I6
                  • May 12, 2002
                  • 168

                  #9
                  Actually if you could take photos of both that would be great.

                  thanks
                  1979 J20, Firecraker Red

                  Comment

                  • Herk
                    350 Buick
                    • Jun 12, 2006
                    • 1123

                    #10
                    As far as I know they all use the same basic Saginaw 800 series steering box. The position on the frame changed in 72 to allow for the larger slanted AMC radiator. The boxes themselves are standard GM parts https://leepowersteering.com/pages/h...entify-gearbox


                    FWIW I swapped to a Camaro Z-28 box for quicker ratio and firmer response.
                    There are 2 rules to success in life...
                    Rule #1: Don't tell people everything you know.

                    1971 J-4700/Buick 350 Stage 1/TH400/D20/D44/D60/Koenig PTO Winch
                    2005 LJ Rubicon Pretty close to stock

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