Steering Box Input Shaft Spline Count

[OmegaJ1]

Hello all,
  I have a 77 C10 stepside, power steering, with a 350 SBC.  I'm trying to replace the rag joint with a u-joint but I don't have any calipers to measure the input shaft on the steering box and theres not a lot of room for error when measuring this (3/4" vs 13/16").  My question is, what  is the spline count on the input shaft of the steering box?  The numbers on top of the box are 7802644.  I tried counting the splines and I counted 26, but I haven't heard that these trucks/steering boxes have a 26 spline input shaft.  All my net searches show either a 3/4"-30 or 13/16"-36...any help would be greatly appreciated.

Jacky

[Captkaos]

you mean a borgensen joint?  There should be a post here on that..  If you call them they can tell you the specs also.

[VileZambonie]

I can measure mine tomorrow if you send me reminder.

[OmegaJ1]

Woohoo!! Success...found a buddy with a set of calipers...3/4" input shaft....thanks Capt & Vile for the offers to help, I really appreciate it...hope you have a good rest of the weekend

jacky