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Can you guys help me figure my 440 out

I have a 440 build date 1-6-71


only numbers I could find are 2 10 424

basic 440 cast number 2536430-5

D N pointed at the d

on clock type points to the 7 oclock position wtih a smaller dot on on the 11 oclock position

Motor is rebuilt but I am just curious

Thanks for any help

Dean



curious about WHAT ??? it's possibly a 71 model year engine if it was ASSEMBLED on the date you say , but I'm guessing that date is the CASTING date on the side of the block ?

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only numbers I could find are 2 10 424



Is this number stamped or cast in ? If stamped WHERE is it stamped ?