Originally Posted by montea
oh and 2 last questions...
will the spedo gears from the 200r4 work in the TH350??
what is the single Green wire attached to the drivers side of the trans for?
The speedometer gears for the TH-2004R will not interchange with any other GM transmission.
The single wire on the drivers side?
The only GM transmission I know with a single wire on the drivers side is the TH-400, it is the "passing gear" activation power wire, the TH-400 "passing gear" is activated by applying 12 volts to a solenoid located inside the transmission through a bulkhead connector located about three quarters back on the drivers side of the 400.
If there is a four prong connector near that same location, the transmission is either a TH-350C (350 with lockup torque converter),the TH-2004R (which you can already identify as you have one there), or the TH-700R4 (which we are accurately guessing it is not).