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Old 01-04-2021, 11:19 AM   #388
MDPotter
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Join Date: Aug 2018
Location: Western Colorado
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Re: 1968 GMC - Ol' Blue

We also installed my Vintage Air. It was a foggy, frosty, and cold drive to the shop but was nice and toasty on the way home. This is the evaporator kit (heat only), but the underdash box has all of the provisions for A/C components down the road. I found out that there is very little space between the motor housing and the kick panel - I actually had to cut down my speaker spacer and even then they still touch. I wasn't sure how hard it was going to be to install the duct with all of the wiring and other components already in the dash, but it wasn't too bad. I was a little disappointed when I went to drill the bottom most hole for the heater core line in the firewall and the centering bit of the hole saw caught something and snapped which let the hole saw itself scar the firewall, but I can touch it up later. I got a rebuild kit for my stock heater controls from Old Air (new lens, levers, and bushings) and used Vintage Air's cable converters - they're just rheostats. I forgot to take a picture, but one of the previous owners of this truck had cut new levers out of a speed square. Apparently the factory levers were pretty weak. The rivets that connect the face to the controls had mostly let go so someone had added the screws through the lens at some point too. There is no room to spare between the underdash box and the controls either. But no big deal, these controls are only temporary until I decide to spend the $250 for the Vintage Air electronic control panel and add the A/C components. I'm glad to finally have all those holes in the dash filled and to have a warm interior.

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