I started the rebuild of my th350 tranny by starting disassembling it last night. I almost got it completely tore down but I'm lacking a couple of tools to do so. One of which I ordered, a clutch spring compressor, and the other is snap ring pliers which I'll just buy.
I've never rebuilt a transmission before but this thing is a piece of cake to take a part with the help of a Ron Sessions book. Shouldn't be too bad to put back together either. On another note, this tranny is really clean inside and has very little signs of wear on the clutches, bushings, and trust washers. I had thought about just buttoning it back up with new seals and gaskets, and a good case cleaning but I want to make it more durable by adding an extra clutch and a hardened sprag as well as give it stiffer shift with a shift kit and adjustable modulator.
Pan off. See, clean.
My low buck oil pump puller. A $7 pry bar and two 3/8"x16 bolts threaded in 4 complete turns. Worked like a charm.
This is about as far as I got. I couldn't remove the nickel sized snap ring that holds in the gear / shell and you can see in the next picture the valve body is disassembled.
More to come as I finish tear down, have the case hot tanked, clean the hard parts, and reassemble.