I'm going to install a cable operated control valve in the heater hose of my 56 Victoria. The valve has a directional flow arrow on it. Is the coolant flow fed from the water pump or from the manifold? 

SE Wis

The source of coolant is from the manifold to the core and back to the the pump. 

64F100 57FAIRLANE500

thanks that's what I was thinking

SE Wis