A/C duct installation help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1972Blaze · 08-03-2013, 06:16 PM

I am about to begin reinstalling all of my new A/C and defroster ductwork. Are there any threads or websites that walk through the process? Which pieces to install first, what order to do the rest? When to connect the ductwork to the vents and boxes below? I have the assembly manual for routing, but that does not go into installation order.

Thanks in advance.

Andy4639 · 08-03-2013, 07:06 PM

Installing it can be a hassel if you wait until all the other stuff is done but then again the other stuff will be a hassel if u install the duct first so it's really a matter of what u want done first I would say. I installed mine after the fact since I added it to my non AC truck. It wasn't bad though. I took the dash out and the glovebox out to do it though.

1972Blaze · 08-04-2013, 11:12 AM

Thanks. I have the glove box out and even the heater box (installed new heater core). Should I pull the gauge panel? Anyone else have any suggestions what should go in first and in what order? I have the vent balls out too. Should I attach those hoses before or after I put the balls back in, or does it matter?
Posted via Mobile Device

Andy4639 · 08-04-2013, 01:06 PM

Work the duct from the boxes under the dash out to the balls the balls snap on the ends of the housing anyway. The center vent is farely simple and the deforst vents are to. The hardest one is the driver side ball duct.

08-03-2013, 06:16 PM	#1
1972Blaze Registered User Join Date: May 2013 Location: Covington, Louisiana Posts: 243	A/C duct installation help I am about to begin reinstalling all of my new A/C and defroster ductwork. Are there any threads or websites that walk through the process? Which pieces to install first, what order to do the rest? When to connect the ductwork to the vents and boxes below? I have the assembly manual for routing, but that does not go into installation order. Thanks in advance. __________________ 1972 K5 Blazer Cheyenne 1966 L72 Corvette Convertible 2016 GMC Yukon Denali

08-03-2013, 07:06 PM	#2
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,936	Re: A/C duct installation help Installing it can be a hassel if you wait until all the other stuff is done but then again the other stuff will be a hassel if u install the duct first so it's really a matter of what u want done first I would say. I installed mine after the fact since I added it to my non AC truck. It wasn't bad though. I took the dash out and the glovebox out to do it though. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

08-04-2013, 11:12 AM	#3
1972Blaze Registered User Join Date: May 2013 Location: Covington, Louisiana Posts: 243	Re: A/C duct installation help Thanks. I have the glove box out and even the heater box (installed new heater core). Should I pull the gauge panel? Anyone else have any suggestions what should go in first and in what order? I have the vent balls out too. Should I attach those hoses before or after I put the balls back in, or does it matter? Posted via Mobile Device __________________ 1972 K5 Blazer Cheyenne 1966 L72 Corvette Convertible 2016 GMC Yukon Denali

08-04-2013, 01:06 PM	#4
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,936	Re: A/C duct installation help Work the duct from the boxes under the dash out to the balls the balls snap on the ends of the housing anyway. The center vent is farely simple and the deforst vents are to. The hardest one is the driver side ball duct. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.



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