Dan are you looking for the numbers on the block? Remember, Ford used what was on the shelf. You can find '66 rods in a '67-'68 motor. '67 motor in a 68 model car. Waste not, want not.
My "High Performance Ford Engine Parts Interchange" book said there were 24 different 427 blocks.
Dwight
OK 7 for the year A for Jan 20 for the 20th day of the month.
scrape a little grease off and you can find the casting numbers
on the back of this 428 block I found a "S"
