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Old 08-27-2014, 03:37 PM   #1
slammed90
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non ac cab to ac cab

Ive got a 84 c20 basic model n only has hoses for heater...what would b the easiest way to convert it to having ac?...thnks in advance
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Old 08-27-2014, 05:21 PM   #2
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Re: non ac cab to ac cab

Can you post a pic of the box on the firewall?
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Old 08-27-2014, 07:44 PM   #3
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Re: non ac cab to ac cab

Ill take pics in a bit.
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Old 08-27-2014, 08:52 PM   #4
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Re: non ac cab to ac cab

Im changing cabs. 81 rusty no option to 87 Silverado.

I was wondering if it possible to have the footwell vents and AC at the same time.
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Old 08-28-2014, 09:38 PM   #5
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Re: non ac cab to ac cab

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Originally Posted by farmall View Post
Im changing cabs. 81 rusty no option to 87 Silverado.

I was wondering if it possible to have the footwell vents and AC at the same time.
leave in the manual kick vents,thats the back of the stock AC selector ,
close it off to the tee to the front
plug the line to the pass side,open and close both manualy.
should work
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Old 08-29-2014, 12:14 AM   #6
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Re: non ac cab to ac cab

Thanks!
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Old 08-27-2014, 09:31 PM   #7
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Re: non ac cab to ac cab

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Old 08-27-2014, 09:31 PM   #8
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Re: non ac cab to ac cab

No box...hose goin to the radiator
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Old 08-27-2014, 10:02 PM   #9
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Re: non ac cab to ac cab

Non a/c firewall, just making sure. You would have to modify the firewall to put on a factory system. I wouldn't consider that too hard, but it does depend on your knowledge, available tools, and how much you care how it looks. Don't have any experience with aftermarket systems, probably would be easier but more expensive.
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Old 08-28-2014, 02:08 AM   #10
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Re: non ac cab to ac cab

1200 was one of em aftermarket ones...with that kinda cash I'd rather put another cab on it...but cabs too clean to take off..
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Old 08-28-2014, 02:09 AM   #11
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Re: non ac cab to ac cab

Would b the fastest n cleanest way though
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Old 08-28-2014, 06:48 PM   #12
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Re: non ac cab to ac cab

My 86 started out as a non A/C cab. I pulled all the necessary components of off a blazer that was getting scraped so I could convert. The hole in the firewall is different and I started to make a pattern off of the Blazer firewall when I found a replacement cab with A/C. My original cab was more rust than good metal. To convert to the OEM setup it is a bit more than just swapping out the blower motor box in the engine bay. The controls are different. The manual kick panel vent setup on the pass. side get replaced with a vacuum actuator and there is an additional actuator and flap to install in the rain gutter on the passenger side.

Having said all of that, it would be cheaper to find OEM parts to convert with a little bit of cutting the firewall. The engine compartment looks much cleaner with a system like what Vintage Air offers. The V.A. system has a better blower motor but that system will hurt the wallet pretty bad.
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Old 08-29-2014, 02:45 AM   #13
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Re: non ac cab to ac cab

Vintage air makes a kit its not cheap.But everything will be brand new and its a under dash unit so you have a smoother firewall.
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