340 w/ 727 auto won't turnover

If "it clicked" it sounds like the relay is firing. Maybe the relay is bad, maybe the starter is bad, maybe the wire from the relay to starter solenoid is bad. Jumper the two large exposed terminals on the starter relay. If it cranks, the starter, battery, cables, and solenoid wire are all OK. Double check the relay clicks. If it does the relay contacts are gone.