Given as much work as is going into Dad's truck (blasting and painting the frame, painting all the body parts, painting or powder-coating the engine parts, and painting all the plastic parts with SEM) I can't stand the thought of having the PS pump spray all over everything. Justification for a Saginaw in and of itself. Not to mention getting rid of the groans. And then there's the slick mount arrangement that I found.
My Ranger has a very similar power steering pump to the CII. It never whined before I changed the rack and pinion. But then when I re-filled it and started the truck up, it had a nasty whine. Found a procedure for "bleeding" the air out of the pump, and it helped get rid of almost all of the whine. There's still a little whine at full lock, and I could probably bleed it some more to get rid of that. But it's quiet under normal turns, so I'm happy with that.
The C2 pumps always mark their territory if you turn the wheels with the engine off.
I don't think any amount of bleeding will keep them from whining against the stops.
Seems to be a feature.
Saginaw pumps hhave a larger diameter shaft.
You need a pulley from a v-belt van.
Easier to find the whole setup from one with a carburetor.
Every time I go somewhere I see old vehicles on the roads or in peoples driveways. Usually in decent shape. I don't see rusted out cab corners or fender wells too often here. If I do, they usually came from somewhere else.