Larry, I happened to see the post inquiring about this engine on the Stovebolter's R Us FB group that includes a couple photos. Since the head is a late 235 casting '848, the engine is most certainly a 235. That head does not interchange to a 216. So, the engine number appears to be a restamp.
Since the late 235 head will not bolt to a 216 block (even the number of head bolts is different), this is likely a replacement engine that was stamped to the vehicle's original engine serial number, to match the vehicle's original registration. Many States' DMVs used the engine number for registration, rather than the A-pillar tag body number. It's not uncommon to see replacement blocks stamped so as to preserve the vehicle ID at the DMV. I suggested to the OP that he look for the block casting number, low and forward of the distributor, and the cast-in block date code behind and just above the starter. That's the best way to ID the engine more definitely. Unfortunately, the OP hasn't posted any casting numbers.
Doug
