I have a question on my 440 engine block I just picked up.

I thought I was getting good with these things but this one has me confused.

What are all the numbers on this block pad?

G440
11431
11 11

I realize this is a 1971 non HP engine block.
Am I correct in assuming this engine was built November 11 1970?
I am extremely puzzled what the 'center row' of numbers are for or what they mean.

What cars were built at the "C" Jefferson, MI
assembly plant?







1969 Dodge Super Bee A12 (440 Six Pack, 4-speed, Dana 60 4.10)

1972 Plymouth Road Runner (400, 4-speed, 8.75" 3.23)

1974 Plymouth Duster 360 (360, 4-speed, 8.75" 3.23)