1969 Camaro a/c car, wanting to go back with heat only - Team Camaro Tech
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post #1 of 6 (permalink) Old Apr 20th, 11, 08:31 AM Thread Starter
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DK
 
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1969 Camaro a/c car, wanting to go back with heat only

I'm new to the board and appreciate the welcome and feedback. Situation: I recently acquired a 1969 Camaro a/c car that someone put a big block 454 in (i'm already positive it is an a/c car).
Dilema: the car has no "suitcase" or any under the hood components under the hood...also the only thing under the dash the car had is the control with cables and the vacuum hoses which are rotten.
Plan: I'm not interested in going back with a/c but would like to at least have heat and defrost.
Understanding: I'm going to purchase the a/c delete panel and blower motor for under the hood to cover the "hole" in the firewall. I already ordered a a/c heater box for an original a/c car (since the regular heater box will not work). I'm in the process of searching/gathering the rest of the ducts and parts needed to tie it all together.
Question/lack of knowledge: In order for the system to function for heat/defrost is the vacuum line system absolutely necessary or will the vents for heat/defrost heat operate manually via the cables? If it will not work without the vacuum system does anyone know a way to modify the box/ducts so that the vacuum system is not necessary? Also does the vacuum system really need to be hooked up to the kick panels? Just curious because I the less parts I need to purchase and hook up for heat/defrost the better.
Again, thank you for your time and feedback.
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post #2 of 6 (permalink) Old Apr 20th, 11, 09:18 AM Thread Starter
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Re: 1969 Camaro a/c car, wanting to go back with heat only

Almost forgot: Also, is the a/c wiring harness necessary for the unit to work as heat/defrost only? I was wondering exactly what the electrical connections controlled on the switch? Thanks, David
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post #3 of 6 (permalink) Old Apr 20th, 11, 10:36 AM
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Re: 1969 Camaro a/c car, wanting to go back with heat only

DK, the vacuum system was to open close the cowl and kick panel valves and close the heat bypass valve. If I were you, I would remove the cowl valve and patch the metal, replace the kick panels with regular ones. The defrost duct is just a flapper controlled by the cable. The heat should just be a cable to a flapper too, but may have some vacuum stuff. The fan switch and heat/AC controls may take some tweaking to remove what you want while keeping what you need.

Kevin


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post #4 of 6 (permalink) Old Apr 20th, 11, 11:28 AM
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Re: 1969 Camaro a/c car, wanting to go back with heat only

I know you said no AC but does that mean you would not want to install a Vintage Air set up that has very little underhood components? That way you would have heat and AC and defroster.

Don
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post #5 of 6 (permalink) Old Apr 20th, 11, 11:58 AM Thread Starter
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Re: 1969 Camaro a/c car, wanting to go back with heat only

Kevin, thanks for the response, good info

Don, I did consider the under the dash unit but don't want to spend that much money at this point. Trying to get the car functional and on the road for the time being then may do something like that later. Thanks, David
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post #6 of 6 (permalink) Old Apr 20th, 11, 12:54 PM
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Re: 1969 Camaro a/c car, wanting to go back with heat only

I am doing the exact set-up you are wanting to do. I am a little farther along than you. You will need to purchase and install a new blower motor resistor in the a/c delete box then rewire the controller. The heater only resistor is set up for a 3 speed blower switch and the A/C controller has a 4 speed switch. Shoot me an e-mail and I will send resistor part number. It is still available from Chevy.
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