More seriously, if I were running an automatic, the 700R4 is the way to go. Late 80's is where you want to go. They were junk until about '85 and need a computer sometime in the early 90's. One of the automatic experts oughta be able to get more specific.
You are correct, the early 700r4 had lots of problems. You will want to find one with the aux valve body, or a 4L60. (the last update before the electronic shift) The last year for the 4L60 was 1992 as a wide spread transmission. Some 1993 cars(F bodies and some trucks had it)but most 1993 models had switched to the 4L60-E. Which depending on your choice of engine could work for you. A more modern power plant with fuel injection could also be a choice. Possibly a Vortec 350 and a 4L60-E out of a half ton. LT1, LS series or even A 6.5L turbo diesel and a 4L80-E.
