Just an FYI- - - -I have a 1948 production 216 that has the same ID number that's on the machined pad behind the distributor stamped into the gasket surface for the pushrod cover, at the front of the block. I don't think I've seen that on other stovebolts. That one also has "48" cast inside a circle similar to the one in a photo above. No idea where that block came from, it was acquired in one of my horsetrades!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!