Hi Ray,
Google www.ford-y-block.com
Scroll down on the Home page to the rectangle,
'Information Center'Toggle the heading,
'Block Numbers'Scroll down on the page that opens to the later block numbers.
In looking at your engine block, the block numbers are located on the driver's side, above the oil filter.
Hope this helps.
NoShortcuts
a.k.a. Charlie Brown
near Syracuse, New York