Continuing the rebuild of a 68 715. Engine rebuilt...runs good no leaks, knocks, or smoke. New clutch, pressure plate, throwout bearing, pilot bearing. Adjusted clutch per the tech manual. Transmission will not go in gear with engine running and clutch pedal pushed in. Grind city.

Checked the pressure plate... it is moving away from the clutch plate when the clutch pedal is pressed in. Haven't looked at it when motor is running.

Any ideas....I'm not looking forward to pulling the transmission.