tinkerer wrote:
I originally had a 275 hp 5.9 Cummins and it did ok, but it was gasping for breath a quite a bit,and be careful of those 275 hp 5,9's as the blocks like to crack on them causing a $19,000 bill for a replacement engine. I know because it happened to me. I have a CAT now and would never buy a coach with a small block Cummins again.;)
There were some 5.9l blocks in the 1999-2000 time frame that had a thin wall area. They would have the number "53" cast in the block near the oil pan.
If the engine does not have the 53 block then you will not have issues with a cracked block.
