47RE. It was leaking a lot of fluid from the bellhousing. I tried a bottle of Lucas goop as a last ditch effort before I yanked the transmission out but no dice. So I pulled the transmission and replaced the pump gasket, o-ring, pump bushing and converter seal. The torque converter failed a pressure test so I replaced it with a billet one with a slightly lower stall speed. It also got new cooler lines, a new governor pressure solenoid and sensor and a new filter.
Good to know. I use more 3/8 than anything else, usually I just run an adapter in my 1/4 hex, but its getting to be time to get a dedicated 3/8. Ever try any of those knockoff batteries? I see mixed reviews with them.