I have a few numbers on a short block I have and need to find out what year and model this short block or block goes to. Any help would be greatly appreciated.

3979008
3970792
81-04-024
23L05
2sb0086076b

If any of these can tell me what this is that would be great. Thanks

 

i would try to locate a cummins shop and see what they say

 

I also have a block engraved with 3970792 on the block deck near the oil filter. Did you ever figure out what yours was from?