Or too short;
Fully assembled; with the fork properly located on the TO collar, and with the TO assembly pushed forward onto the clutch fingers,
the TO fork should be at or near the rear of the window in the factory BH, about 3/4 inch from the edge.
The TO fork only needs to travel forward just enough to make about .080 departure on a diaphragm clutch/ maybe .100 on a 3-finger. This should be achieved well before the TO fork reaches the front of the window, and LONG before the pedal gets to the floor.
If it doesn't, the most likely reason is wrong parts, but I suppose that the disc could be in backwards.