can you help me decode these casting numbers

[jackel440]

All right guys I am trying to figure out the year of this 360 i have,as i can't remember what yr van i took it out of and i got the these #off the front of the block
8k360   1   2   07
50755
449
then there is the casting numbers on the side of the block  4008830-360
I know its a 360
just trying ti figure the year.
I looked at the heads ,but didn't see the numbers for it on them.I forgot to look on the bottom of the runnersthought.they are open chamber ,and they do not have any air injection holes on the exhaust ports.
what kind of cc do you recon these heads are?
well anywell thanks guys

[mikepmcs]

maybe this can help

http://440source.com/blockinfo.htm

[74340charger]

I know on my 340's, on the other side of the block from the one that tells you it is a 360, there is a clock type thing and the year and date in which my block was made. I hope that helps, and you might have to scrap a lot of grim off though.

[jackel440]

that was some good reading!
lots of info there.And if what i read was right it should be around a 75' i think.I will have to go back out in the artic  air and lookat the block somemore