1979 Chevrolet C70 Conversion to OEM Air Conditioning

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Originally Posted by _Ogre

nice job
amazed that gm had 2 firewalls for a truck ac and ac delete

why you didn't convert it over to r134?
all you had to do was solder in a new expantion valve
then go with a new compressor, dryer and hoses

Thanks, yes I am planning on converting it, I have flushed the oil and have adapters to go on the low and high side ports. I am going to make new hoses that will be the barrier type for 134A.

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Next I installed the A/C configured glove box. I had to change the plastic pocket from the donor door to my original door. This ended up being more difficult than I imagined. The lock has tumblers that have to be released. This is accomplished with a paperclip inserted into the hole in the release knob. Once the tumblers are released then you pull the knob and tumbler assembly out and remove the retaining nut using a hex wrench. Remove the four screws (2 each side) and bend the metal tabs on sides of the glove box door outer metal shell. This will give clearance so the plastic pocket will slide out. Reverse the process to install the A/C style pocket.

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Installed the lower heater vent today. This vent is attached with a small screw on the passengers side and a bolt with rubber grommet on the drivers side. Note the forward edge snaps to the edge of the heater housing prior to installing the small screw.