V8 Heater Hoses

The heat valve on its adapter pipe fits to the outlet 'A' on the inlet manifold, with a hose to the lower port on the heater matrix. The upper port on the matrix is connected to pipe 'B' that is clipped to the underside of the inlet manifold and runs to the front:

'A' is the hot coolant outlet from the inlet manifold to the lower port on the heater matrix. 'B' is the return from the upper port on the matrix to the pipe running under the inlet manifold:

The pipe under the inlet manifold comes out at the front and has a short hose 'A' to one of two small ports on the pump. There is a port on the front of the inlet manifold with another short hose 'B' to a second small port on the pump. 'C' is the pump inlet from the bottom hose, and 'D' the thermostat housing outlet to the top of the radiator: