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Swapping in Air Conditioning

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by FOURFOURMAG, May 2, 2003.

  1. FOURFOURMAG

    FOURFOURMAG Registered Member

    Joined:
    Mar 16, 2003
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    Location:
    Medford, OR
    I want to put air conditioning in my 1973 Blazer. For parts I have a 1980 1/2 ton truck with AC. What under-dash stuff am I going to have to swap?
     
  2. Muddytazz

    Muddytazz 1 ton status

    Joined:
    Jun 30, 2002
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    Location:
    Salem, Or.
    Everything.........complete heater box(inside and out which means cutting a hole in the firewall), cables, control panel, you'll have to put in dash vents above the glove box, 2 vents on the instrument cluster bezel, all the a/c duct tubes....if i've missed anything, someone else will chime in /forums/images/graemlins/thumb.gif
     
  3. BRN78BLAZER

    BRN78BLAZER 1/2 ton status

    Joined:
    Feb 5, 2003
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    Location:
    Stoney Creek Ontario, Canada
    I put a/c from an 80 in my 78, and when you cut the hole, make sure it's the same size as the the underdash unit, not the underhood unit. I did it backwards and it causes all the air from the motor to leak out, and was quite a chore to seal up. I ended up having to put it in place and simply smear a hole tube of silicone around the edges inside to get it to seal.

    One other note, I never bothered with the kick panel vents, and the panel inside the cowl that are supposed to use inside air when on max. I just plugged the vacumm hose that runs it and I've never had a problem.

    Hope some of this helps.
     

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