Toolman awhile back you and everyone helped me I'd my 67 273 commando. My engine has 273 cast in the block. That's why I was asking about the missing numbers. I wonder what is the difference with the 330.View attachment 1715153828View attachment 1715153829
The 10-20-66 is the casting date. That would be a 67 block I would imagine. The hand stamps on the block I don't know for sure but the 0273 is obvious. The 12-21 may be when the engine was assembled (December 21)
