Thanks for the info. Doesn't seem to apply to these old blocks. There are only numbers on this block no letters,
as stamped on a machined pad just forward of the passenger side cylinder head.
Good day.
I have just acquired a 283 block. The numbers 'stamped on the machined boss are 77 6471759 , see below, Can anyone direct me to a web site where I can determine what these numbers mean.
I've looked but run into a dead end.
The block casting numbers are 3849852 and I know what these...