While waiting on a fuse panel I bought through Del City, I decided to disassemble the factory heater box yesterday. Several of the OEM screws just wouldn’t budge, so out with the 36 grit sandpaper on the rolox to remove the screw heads. So hopefully the 73 year old heater core wasn’t going to leak. No leaks! I spent at least 30 minutes flushing it out and did get a bunch of crap out of it till the water ran clear. Looks like it was made of brass.
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I noticed that the 6 volt motor was virtually the same size as a junk A Body 12 volt heater motor. Rock Auto has them for about $29 so I’ve got one on order. No need of a voltage reducer for the heater blower. I’ll need to media blast the case and make it look decent.