You need to remember that for water to flow through the heater one side is on the inlet side (bottom hose) of the radiator water pump inlet(suction) and the other side, intake manifold fitting is on the outlet side( hot water to the heater) scope

Last edited by Cab_Burge; 01/23/20 01:35 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)