old mining camp -help ID this motor?????

[tarussell]

I think “ktmoutfront” has nailed it too !
After looking at the bellhousing bolt pattern closer old AMC seems to match up as well.
Good call !

 

[tRustyK5]

Well done Wade! I knew it was one of the 50's independents or a derivative. You can see it's roots in the Stude engine for sure...