CK5
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'86 Jimmy 4in Lift, 40’s, tons, 8.1 Swap- 700r4 said PNNNNN

This is not a dedicated trail rig, but does trailer to the destination usually. I am currently in the planning phase of doing a 52/56" spring swap, and getting back to being more road worthy.
So I figured out why I have no heat in my Jimmy tonight, my buddy pointed out that my heater hoses are routed wrong...:doah:

I've literally never had heat. I mean, it's barely there.
 
At least you got it figured out now. I'm guessing they were to the wrong places on the engine so just no flow through the heater core.
 
Ok. I still have no idea. Why does the heater core care which direction the coolant flows?
It's not a question of which way it flows, but more about the fact that both hoses are hooked up to pressure therefore neutralizing the flow to zero.
 

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