Without question, the casting is C193
It also has a steel line behind the side cover. Kinda squiggly, from the rear of the engine to the middle of the area behind the cover.
If I knew how to load pictures to this site, I would.

1949 3600


Don't sweat the petty things, and don't pet the sweaty things.
Never play leap-frog with a Unicorn.
2 Wrongs don't make a right, but 3 lefts do.
Of all the Henges, Stone is my favorite.
If at first you don't succeed, skydiving is not for you.
Here's a word I just made up.....Plagiarism.