engine pad numbers

[Challenger in NC]

Anyone know the decoding of this engine pad?
If I recall correctly from the serial number, it was a 1973 block.

The pad reads:

J4     0T       maltese cross

5  10    2

[73440]

Looks like 440
T may mean truck use or Trenton
5  10 would be build date
2 may be 2nd shift
Maltese cross .001" U/S crankshaft

[Challenger in NC]

Looks like 440
T may mean truck use or Trenton
5  10 would be build date
2 may be 2nd shift
Maltese cross .001" U/S crankshaft

cool, thank you