Originally Posted by Justhorsenround
Numbers are in initial post. Let’s help ID these!

1. CL9601592
2. 06417087F

Maybe those are Engine Serial Numbers?

Post the various codes that are found at locations shown in the link given in my post above.
They will help ID the size and year (and maybe the application) of the engine
- casting codes
- casting dates
- and maybe designate the use of the engine - car/truck and maybe the size of truck)
The casting codes are the most useful codes for IDing an engine.