I’ve been to a bunch of military surplus auctions.
Most of the time, all you see is a sealed crate with a bunch of numbers on it.
It will say “engine assembly”, date of manufacture, who made it (Chrysler in this case) and military part numbers (not Chrysler part numbers) – so in many cases you know what it is (an engine, in this case) but no clue as to anything else.
It might be MI Abrams tank engine for all you know (which are built by Chrysler).
I suspect he bid hoping it was something a lot different than a 318 engine.
That said, I have seen some brand new Cummins engines and International diesel engines sell for less than $1000 each. You would expect they both would be big truck engines – but in some cases – it could be an engine for a refrigerator trailer A/C unit.
If you have access to the military numbers (not easy to do) or can use the shipping weight/size of crate, you can have some idea on what you’re getting.
In this case – I don’t see there being any chance he will get $5,000 for this engine.
Might be better to bite the bullet and sell it at a more reasonable price (ie: less than he paid for it) so it can move.
BudW