heater hose connection

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MoparMike1974

MoparMike1974

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Which way are the heater hoses supposed to connect to the engine? Smaller one on water pump or on intake?
 
Check in the factory service manual. In 67 it shows the routing.
 
Dana67Dart said:
Check in the factory service manual. In 67 it shows the routing.
Click to expand...

I don't think the heater rally cares, long as water circulates thru it. I just put my under the dash hotrod heater back in mine, I hooked the feed side of the water pump up to the bottom of the heater core, thinking it should force the air out faster . ????????????

HOSES ARE PARALEL IN ENGINE BAY TOO. LOOK BETTER!
 
I'm pretty sure the feed side is from the hot intake and it returns to the pump for another trip thru. This way the core always sees the hottest water. This is also why, if I'm bypassing the heater I plug that hose so it cannot go back thru the pump and dilute/pollute/corrupt the incoming cold water
At the heater core, the small pipe, or the left pipe (from the engine side view) is the hot-side, or where I hook the intake to.
 
I cant speak to a 74 (Assumption as no engine or vehicle listed in the post) But looking at the heater core and diagram on my 67 273, as other have spoken about... the drivers side heater core tube goes to the top of the core and the passenger side goes to the bottom of the core

upload_2018-11-2_8-38-40.png


The diagram below shows the hot water from the manifold going to the passenger side tube to the bottom of the core and the return to the pump coming from the drivers side tube to the water pump (meaning the water pump connection is on the suction side of the system).

upload_2018-11-2_8-37-59.png


In all the images, in the 67 FSM, the drivers side heater hose always goes the the farthest forward connection (IE water pump)


upload_2018-11-2_8-46-16.png


upload_2018-11-2_8-46-33.png


upload_2018-11-2_8-46-59.png
 
Ok I have a question my car has a heater control valve so is that the hot side or cold side. In other words does it come out of head into heater core then control valve or does it come out of head into control valve the heater core.
 
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