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I am getting ready to install a power steering gear box on my 49 3800. Does anyone out there have measurements or pictures of where & what position you installed your gear box? I have seen plenty of 1/2 ton mounting but not any 3/4 of 1 ton trucks.

The crucial part of the placement of the power steering box is where/how it will locate the drag link. The drag link needs to be level with the road and run front to back when the wheels are in the straight ahead position. Failure to do this will lead to bump steer. Bump steer is bad, mmmkay?
So even if you find someone's measurements or pictures, make sure you check the position of the drag link.
Carl

The other ideal consideration for steering box placement is having the back end of drag link attach to pitman arm very near the fixed end of leaf spring (not shackle end). This also reduces bump steer because axle and drag link pivot at same point, and follow same arc, so not much differential movement between axle and other end of drag link.

Here is a bad pic of when I was trying to mock it up. I am using the CCP kit. According to the instructions for the 1/2 tons the bottom left screw hole is drilled at 14.5 inches from the end of the frame

http://i1062.photobucket.com/albums...7-490C-B79B-B829F1C9C639_zps2ky0xgu3.jpg

I think the front of all the 1/2, 3/4, and 1 ton frames are the same. It's the back end that differs. I installed the CPP kit in the same location on 49 1/2 and 3/4 ton trucks. Works perfect and love the outcome. Dave

Dave, So did you install the gear box so the pitman arm was parallel with the ground to keep the drag link level? If so what kind of bind did that put your steering shaft u-joint in? attached is a better picture of what I am looking at. I will have to make my own bracket if I am to keep the pitman arm level so to insure the drag link stays level.

http://i1062.photobucket.com/albums...5-4D27-9541-F1EB3273D649_zpsmzsn82we.jpg

It's been a few years since I've done one. I'll take a look when I get a chance and get back to you. Dave

The 1/2 ton that I installed it on has a dropped axle so the drag link was level. On the 3/4 ton which sits higher I used a steering box from a 4x4 which uses a different pitman arm that was easy to modify. This pitman arm does not fit the 2WD steering box. Dave

Often pitman arms can be switched to different steering shafts by filing, with a 3 cornered file, by filing the skip spline away from the pitman arm, thus allowing the pitman are to occupy any position on the shaft.

Ed