I can see the water movement in the radiator, I am going to pull the radaitor and have it profesionaly cleaned, and install a new water pump, and T-stat just to be safe. Then I will know what I have as far as a cooling system.

52 Chevy 3100 5 Window, LS Swap, 4spd Auto, Vintage Air AC / Heat, CPP Power Front Disc Brake Conversion with bearing upgrade, Power Steering Conversion, LED Tail Lights