Where is the VIN on a 273 motor?

gtsdude said
Correct, VIN #'s started early in 68, my late
67 casting 340 had one stamped in it, so the OP's 69 273
Should have one stamped also.

So someone needs to check a 68 or 69 273 block. It is probably above the oil pan rail on the pass side like the others then.