Strange 318 Block

Thanks!! I believe its a 79, it came out of an 1980 Volare Roadrunner, but it could possibly be 78, its incredibly hard to read the last number, same as the 04289587, i could be off by a number.

Yes those are hard to read at times.

The front stamping says 8-78 for the build,
if 78 MyMopar.com says 59-78:
4104230 318 - LA Race - Painted Orange,
and your's definatley painted mopar blue.