Some...of the Dodge Cummins 5.9 diesel blocks with a casting number 53 on the drivers side of the block (starting in late 97 till about 2002) developed cracks. This was a well known and documented issue in the Dodge pickup world due to postings on various forums.

One of the repairs was a weld stitch or lock and stitch process here

Post seven here has a labor intensive, but cheap 5.9 block repair that may be applicable in your situation.

Of course another block is best.

Good Luck, Ron

Last edited by moparguy; 05/19/2017 2:27 AM.
RonR


1951 3600 with Clark flatbed, T5, 4.10 rear
1970 340 Duster
1990 5.0 V8 Miata (1990 Mustang Gt Drivetrain)
1964 CJ5