Quote:
Originally Posted by chevyguy_72
There is a flapper inside of that box and a slot cut in the bottom and each corner... You can kinda see them in the pics...
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Yeah, but there's no fan. Even with heater delete, laws back then still required some sort of defrost. Even vehicles with heater delete, will still have a heater core. Not sure how GM did it, but I'm familiar with Mopars of the 60's