It may not be the factory crank. I was told it was steel. I was also told that the block had never been bored. When I checked it, it was .030" over. I am for sure on the number of digits, the last two humbers are obviously digits, it is just very difficult to make out what the numbers are. I am going back to the storage building tonight to look at the casting marks. If I can borrow a digital camera off of my neighbor, I may post some pics so you guys can get a better look.