Series 60 Detroit

Have someone look on the ECM and see if it is a DDEC I, DDEC II, or DDEC III.

DDEC III is the preferred controls of those three. That truck would be just around the changeover time from II to III.

 

Series 60 are a very easy rebuild and the cheapest of the three to have it done.

 

How does a '93 have only 200K on it?
Was it used for OTR?
Are you sure it isn't 1.2M?
Check the hot side of the engine and see if there is a NOx tag. That will tell you if it has been rebuilt.
Ask for a printout of Mait records, have an oil sample done (have oil samples from the tranny, and the rear ends as well), and have it run on a dyno as well.

Do you have a mech who is familiar with Detroits and one who you can trust?

 

About half the cost depending on what needs to be done.
It has an overhead Cam and Detroit states to replace the cam if need be.
The Detroit injectors are cheaper than both CAT and Cummins among other parts.
Last time I checked, an in-frame starts out at about $8K compared to the $13K I payed over two years ago for my N14.

 

The military used the old two-cycle when I was in for their Gamma-Goats.
We had Detroits that ran multifuels-Diesel, MoGas....
My 379 has a Series 60 GK that is rapidly approaching the 2 million mile mark.
Any diesel engine will last if you maintain it.
As a quick aside....when you rebuild an engine, check the rears and the tranny. They too have worked the a-z-zes off and will show signs of wear and tear.