Originally built as a SD45 for the Pennsy, this unit would be acquired by the CNW in the mid 1980s and rebuilt with a 12-cylinder Caterpillar engine. Tom Golden photo.

The one and only.... CNW's one-of-a-kind SD-Cat #6000 leads a train across the Manitowoc River bridge in Manitowoc, WI in February of 1988. While the weather was not the greatest, chasing a rare b... (more)

It may be a dreary day in February of 1988, but you tend to ignore that when CNW 6000 is your prey. It's the one and only SD-CAT on the roster, a SD45 rebuilt with a Caterpillar prime mover. CNW 6... (more)

A one of a kind-SD CAT. In an attempt at re-powering, CNW shop crews put a V-12 Cat enging into SD45 6000. Due to limitations with compatibility with the generator and excess weight of the re-powe... (more)