727 Installed - No Movement in Gears

IIRC the TC holds a lot of fluid. Like 4 quarts?

The factory service manual should say.
Not sure about the factory TC, I’m using a 9.5” FTI 3500 stall TC. But either way, it should hold a fair amount. My concern is that the fluid seems to be staying in the pan, rather than filling the TC, but that’s just a guess for now.