I decided to convert my 73 Dart Swinger from AC to heat only so have been searching the forums and have discovered a lot of helpful info but now Im stuck. I picked up a heater box reportedly from a 69 Dart and realized that it has three control doors. Temperature, shut-off, and defrost. That all works great when matched up with the control for that year. I separately picked up a control for a non-AC 73 Dart that has provisions for only two cables. Did one of the doors get eliminated in later year models? Ive looked at photos of boxes for sale and noticed that some dont have the shut off door (the one by the heater core inlet and outlet). Can I get away with tying that one back? That just doesnt seem right but Im missing something here and would appreciate some input.
Heater box dilemma
- Thread starter spdart
- Start date
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the early models used all cables ( 3 ). The later models used cables and vacuum. The easiest way to see the difference is the fan switch early moves left and right, later moves up and down. I know this doesn't help much.
It think you'll need to find a way to install the early contoller in your dash. Different bezel Maybe ? Good luck
It think you'll need to find a way to install the early contoller in your dash. Different bezel Maybe ? Good luck
cudaman51
Well-Known Member
im just thinking outloud, could use a manuel choke nob for third cable.
swing69
fightin' socialism
I"m putting in a 72 non-ac heater box into an 73 AC car. The firewall is different. We cut the 72 firewall and grafted it onto the 73. Also, the no AC uses cables, AC yses vacuum hoses. Additionally, when we went to mount the 72 controls to the 73 AC dash controls.....you got it, the dash mounts are different. We wound up taking the whole 72 dash and putting it into the 73. We also took the extra 10 min. to cut the stereo DIN mount hole when the dash was on the bench. You get a nicer job that way.
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