heater hose location with Old Air A/C - The 1947 - Present Chevrolet & GMC Truck Message Board Network

72GMC51 · 02-26-2010, 05:52 PM

I am installing an Old Air Products 7200 Hurricane A/C & heater in my 72 GMC. The question I have is that in the instructions it says to run the heater hoses from the water pump and intake manifold to the heater core, but it was originally from the water pump and radiator to the heater core. Old Air states that if you run it that way you will get no heat, which I dont understand because it had heat when it was run that way from the factory.
Thanks
John

bdydrppedc10 · 02-26-2010, 06:58 PM

huh that is weird all i can suggest is plug up the hole in radiator and run it how they say to if not you might not have heat then have to do it twice which always stinks

02-26-2010, 05:52 PM	#1
72GMC51 72GMC51 Join Date: Jul 2004 Location: Minnesota Posts: 233	heater hose location with Old Air A/C I am installing an Old Air Products 7200 Hurricane A/C & heater in my 72 GMC. The question I have is that in the instructions it says to run the heater hoses from the water pump and intake manifold to the heater core, but it was originally from the water pump and radiator to the heater core. Old Air states that if you run it that way you will get no heat, which I dont understand because it had heat when it was run that way from the factory. Thanks John __________________ 72 GMC 2wd 1/2 long 350 700r4 A/C PS PB 4:10. Are they ever really finished

02-26-2010, 06:58 PM	#2
bdydrppedc10 Registered User Join Date: Feb 2010 Location: Blairstown New Jersey Posts: 34	Re: heater hose location with Old Air A/C huh that is weird all i can suggest is plug up the hole in radiator and run it how they say to if not you might not have heat then have to do it twice which always stinks

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