My custom built 393 runs at 80C all the time if I am moving it is at 60-65C this time of the year. Today it was just that. Who did your build. Your fan must be constantly on. I have a edlebrock water pump.In the hot of the summer standing for 3-4 min. it will turn fans on but as soon as you move the temp goes right down.I have a 7lb. stant cap and expansion tank on it with catch can.
