I've been trying to figure out cams lately because I am doing a early 22r in my 4runner for a low tech carb build/swap. The early stock 20r/22r cam is quite a bit different than the 22re cam. It supposedly has a bit more intake lift, but the biggest difference is that the intake duration is quite a bit longer. This creates increased manifold vaccuum from what I've read which is typically a good thing for a low end grunt 4 banger. From what I can tell this is more of an RV grind than the stock 22re grind.
I may not fully know what I'm talking about at this point but every early 22r I've ever driven and my daily driven '80 with a bone stock 20r sure pull hills WAY better than all the stock 22re trucks I have had and that is a fact. This is kind of radical thinking since it's using stock parts but I would consider tring to get ahold of one of these early 22r cams and see what it does. You can probably get one for nearly free which is also a bonus.
