shifting automatic

What trans makes no difference be it a 904 or 727. It's up to the engine's capabilities on what RPM to shift at. The best way without using a dyno...Is to go to the local race track and spend a day testing. From what I have learned... the best way to do this is.. 1st run.. shift every shift @ say 4500 rpm , next pass say every shift at 4750 , next pass 5000 rpm, keep repeating till you get to "redline". Pick your best ET from the runs and you should be real close to shifting at the "peak" of your powerband.

Hope this helps. Eric