Installing a A/C into non A/C cab? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

70 SUB · 01-30-2003, 04:40 PM

Has anyone done this before? I have everything out of a A/C cab and want to install it into my non A/C cab. Does anyone have directions ,diagrams, advice? Trying to make it as painless as possible.

Thanks,

70 SUB

Charlie Coleman · 01-30-2003, 05:08 PM

70 SUB

Do a search on this topic.....it's been discussed and you should find useful information.

I am in the process currently myself. I cut out the firewall section from a donor A/C cab and welded it in place. I plan on cutting the holes out of my current dash. If this fails then I will use the donor dash as well.

Did you get the A/C wiring harness also?

**1971Stepside** · 01-30-2003, 05:21 PM

It is very doable. The firewall holes are different and it would be best to swap them out as Charlie mentioned. Make sure you have all the pieces from the donor. There are several small pieces that I missed the first time like the vent door, the flapper up in the cowl, and the little clamps under the battery box for the hoses. I would recommend buying all new o- rings as the old ones will tend to leak if reused.

70 SUB · 01-30-2003, 07:50 PM

I have the wiring harness and all flaps and valves.
Does anyone have pictures?

'71 Lil'Beag · 01-30-2003, 08:46 PM

I did this last Fall. Be ready for a lot of work.The firewall was the tricky part. You have to cut new holes and weld old ones. I be glad to help with questions. I dont have any pic's. I could take finished ones if that would help.

Andy4639 · 01-30-2003, 09:54 PM

[B]I did this sometime ago, and it has worked very well here in the southeast for me. It is how ever very time consuming. you have to re-cut the fire wall and then plug up the old holes partly and then change out everything inside under the dash. Cut holes for the vents. You have to get the ac wiring for the switches, the controler. I also up graded mine to a 80's model truck air system about 5 years ago and went with 134-A and the acumlator, did away with the POA valve. Take a look at this picture and you will see it cleared the fender up pretty good I think. /B]

01-30-2003, 04:40 PM	#1
70 SUB Registered User Join Date: May 2002 Location: Va Beach, VA, USA Posts: 31	Installing a A/C into non A/C cab? Has anyone done this before? I have everything out of a A/C cab and want to install it into my non A/C cab. Does anyone have directions ,diagrams, advice? Trying to make it as painless as possible. Thanks, 70 SUB

01-30-2003, 05:21 PM	#3
1971Stepside Almost Satisfied Join Date: Mar 2002 Location: Springfield, MO Posts: 2,932	It is very doable. The firewall holes are different and it would be best to swap them out as Charlie mentioned. Make sure you have all the pieces from the donor. There are several small pieces that I missed the first time like the vent door, the flapper up in the cowl, and the little clamps under the battery box for the hoses. I would recommend buying all new o- rings as the old ones will tend to leak if reused. __________________ 1971 C10 Stepside. LSx 6.0 with BTR Stage IV, Speed Engineering Headers, 4L80e transmission w/3200 Circle-D Stall. 3.73. Posi. Purchased this truck when I was 17. I started the rebuild (or take apart) in 1993. I have drug it around all over the country in pieces. Finally back on the road in 2021. "I can't complain, but sometimes I still do. Life's been good to me so far."

01-30-2003, 07:50 PM	#4
70 SUB Registered User Join Date: May 2002 Location: Va Beach, VA, USA Posts: 31	I got everything I have the wiring harness and all flaps and valves. Does anyone have pictures?

01-30-2003, 08:46 PM	#5
'71 Lil'Beag Registered User Join Date: Jan 2001 Location: SLC, Utah Posts: 81	I did this last Fall. Be ready for a lot of work.The firewall was the tricky part. You have to cut new holes and weld old ones. I be glad to help with questions. I dont have any pic's. I could take finished ones if that would help. __________________ 71 4x4 SWB 350 72 C-10 LWB SOON TO SWB Salt Lake City, UTAH

01-30-2003, 09:54 PM	#6
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	YES NON AC/to FACTORY AC [B]I did this sometime ago, and it has worked very well here in the southeast for me. It is how ever very time consuming. you have to re-cut the fire wall and then plug up the old holes partly and then change out everything inside under the dash. Cut holes for the vents. You have to get the ac wiring for the switches, the controler. I also up graded mine to a 80's model truck air system about 5 years ago and went with 134-A and the acumlator, did away with the POA valve. Take a look at this picture and you will see it cleared the fender up pretty good I think. /B] Attached Images __________________ 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.

01-30-2003, 05:08 PM	#2
Charlie Coleman Registered User Join Date: Jun 2000 Location: Franktown, CO. USA Posts: 533	70 SUB Do a search on this topic.....it's been discussed and you should find useful information. I am in the process currently myself. I cut out the firewall section from a donor A/C cab and welded it in place. I plan on cutting the holes out of my current dash. If this fails then I will use the donor dash as well. Did you get the A/C wiring harness also?



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