It's most likely a 54-up 235, as there's a valve cover on it that attaches with 4 small bolts on the sides of the cover, and it appears the side cover does not extend above the block. The 216's and splash-oiler 235's has a side cover that went to the top of the cylinder head.
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!