Leaking heater box...`
Post Fiend
Joined: Jul 2004
Posts: 8,786
Likes: 28
From: Northern California
I did a A/C box to a non A/C heater box in my old 1972 F-250. The A/C was totally shot.
Getting the A/C box out was a pain in the bottom. The whole project took me 3 days.
That was mostly to remove the A/C box.
The Non A/C box is three nuts in the engine compartment. Took one out of a 1967 motor resistor and all, no heater core, bought one of those. I took a non A/C heater control out of a 1969.
After I had the A/C box out, it took only a couple of hours, and that was to replace and adjust the Controls, and coolant included.
The only difference in the firewall is where the Core fittings come out. The Non A/C core holes were already drilled but had rubber plugs in them, From factory. I removed the plugs and transplanted them to the A/C holes to block them out.
Getting the A/C box out was a pain in the bottom. The whole project took me 3 days.
That was mostly to remove the A/C box.
The Non A/C box is three nuts in the engine compartment. Took one out of a 1967 motor resistor and all, no heater core, bought one of those. I took a non A/C heater control out of a 1969.
After I had the A/C box out, it took only a couple of hours, and that was to replace and adjust the Controls, and coolant included.
The only difference in the firewall is where the Core fittings come out. The Non A/C core holes were already drilled but had rubber plugs in them, From factory. I removed the plugs and transplanted them to the A/C holes to block them out.
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