Ghostrider: I did look at that site but I don't think I believe everything on that list. It also shows 216's in the big trucks and I don't think that is correct.
OldSub: I started with the Inliners info indicating a 1952 engine then looked in the 1952 Car and Truck Specifications to see if the engine serial number code for that year matched what I had, "G". 1952 model years started with "K" so I kept looking back thru the other year's specs until I found a serial number code that starts with "G", which is 1949. Your explanation about re-stamping makes the most sense. My stamping is "GAA477852" with no spaces or dashes between anything. Does anyone know if the real stampings included spaces or dashes?
I looked in Patrick's catalog and they have a good explanation of the date casting on the side of the block near the starter. Now I need to clean off the old crud and see what that says. I'm guessing that it will match up with the date indicated by the engine casting number.
Thanks to everyone for their input!