727 Transmission Efficiency...

Catching up to your responses. Mine is running the stock torque converter. Everything seems on the up and up. I recently serviced the trans, and set the adjusters. It worked well before and works well now. So you guys are saying that in my condition, the crankshaft and the driveshaft should essentially be running the same speeds (in drive), right? Even though I have an older transmission and converter and it does not lock up.