A long time ago I noticed that from the front, my truck looks like it leans one way just a little. Yes, my front springs are beginning to sag but it isn't too bad yet.
The odd thing is, when I was inspecting them I noticed that the driver side pack is a little different than the passenger side. I am very sure that the packs have never been changed.
I can't remember the exact difference, I think it was either 1 less on one side or just built differently. What is going on here?

 

I guess it's always possible that it was messed up at the assembly plant. When I was a mechanic at a Ford dealer service department in the early 70s, we got a Pinto in that had the rear axle mounted in the center position on one side and in the front position on the other. Our alignment guy couldn't figure out why it drove funny until somebody followed him in another car and told him he was going down the road sideways!

Anyway, in 1952 the F-1 had an 8-leaf front spring pack (21C 5310-B) as standard equipment. You could also get a heavy duty 8-leaf version (21Y 5310-A) as an option on the F-1. The same 8-leaf heavy duty F-1 pack (21Y 5310-A) was standard on the F-2 and F-3. The F-2 and F-3 also had an optional 9-leaf pack (21Y 5310-B) for higher road clearance. These look like the only spring sets that would fit on stock 1952 F-1 shackles (width, length, etc.). If you really want details I can post the table that shows the Ford part numbers for each leaf by model (a bit much I think).

Take a look and see what the exact difference is. On my truck, two leaves were broken completely in two at the center bolt hole. They were just sort of sitting in the pack. I suppose they could have worked loose and fallen out and I would have had one less leaf without ever having had the spring packs removed from the truck.

 

Some folks have been known to remove a leaf or two from the passenger side so the cab would ride level with just the driver inside.