Jasper, Certified, all the large Reman shops use a test stand to spin test the trans. They look similar to this one.

If a simple hydraulic unit (727 with governor for example) it would shift on its own.

Manual shift units need to be manually shifted. Electronic units need the electronics to perform the shifts.

I’m not minimizing Copes stand, just asking a question.

A trans dyno controls input torque and measures output losses - very exoensive units that only the OE’s normally have. Not normally needed for shops building transmissions.

If driven with an electric motor with a torque transducer on the output then it could measure losses, etc., maybe that’s what Cope has ?