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heater core box
I took the box a part and cleaned it out and now I am putting it back together and there is a one swing vent that covers the heater core itself that I cannot remember how it goes, I know i know waht a jack a$$, I blame the army or maybe my parents. If anyone knows where I can go and get a pics of the box that would be awesome

I dont know if this will help but I saw it online for a 69-70 and it may be similar enough

[Image: 81539d1255922585-1970-mustang-mach-1-hea...re-box.jpg]
The '71 shop manual doesn't show much, hope this helps some, don't know if the '73 is different. There's also one with AC, if you need it.

“If you can't explain it simply, you don't understand it well enough.”
--Albert Einstein
sweet I figured it out. The flapper that is closest to the a/c was old and crusty so I took it off and stripped it put a new layer of felt and some foam material so ensure it would seal off when needed. IS that a bad idea. thanks

These are from the 73 manual [Image: 73mustangheaterbox.jpg] [Image: mustanghbox.jpg]

[Image: 2zdx09d.png]
Yea,Tho i cruise through the valley of the shadow of rice,I will fear no Turbo,For Torque art with me.Thy rods and crankshaft,they comfort me. Big Grin Robert
Same thing I would have done, too. It should work the way it was intended to now.

“If you can't explain it simply, you don't understand it well enough.”
--Albert Einstein
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