Heater hoses with AC - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Orange71shorty** · 01-12-2011, 09:27 PM

Could someone please post pics or a diagram of the correct heater hose routing with factory air-small block
Thanks

chipflyer · 01-13-2011, 12:23 AM

Here you go, 5/8 hose from intake fitting to the valve and from valve to lower fitting on heater core then 3/4 for the return. Hook it up wrong and you will mix hot air with your A/C, defeating the valves purpose and making the A/C system less efficient.

**Orange71shorty** · 01-14-2011, 12:50 AM

Thanks chipflyer-I need to get ahold of you for my new spid soon also!

01-12-2011, 09:27 PM	#1
Orange71shorty Senior Member Join Date: Feb 2009 Location: Helena, Montana Posts: 626	Heater hoses with AC Could someone please post pics or a diagram of the correct heater hose routing with factory air-small block Thanks

01-13-2011, 12:23 AM	#2
chipflyer Registered User Join Date: May 2004 Location: Topeka, Ks Posts: 2,293	Re: Heater hoses with AC Here you go, 5/8 hose from intake fitting to the valve and from valve to lower fitting on heater core then 3/4 for the return. Hook it up wrong and you will mix hot air with your A/C, defeating the valves purpose and making the A/C system less efficient. Attached Images __________________ I'm not a pessimist, I'm just optimistic that bad things are going to happen. 1971 Cheyenne Super K10 - tilt, cruise, air, am/fm, tow hooks, factory buckets! 1986 Jeep J10 pickup, - 5.3L Vortec with 4L60e and NP241.

01-14-2011, 12:50 AM	#3
Orange71shorty Senior Member Join Date: Feb 2009 Location: Helena, Montana Posts: 626	Re: Heater hoses with AC Thanks chipflyer-I need to get ahold of you for my new spid soon also!



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.