View Single Post
Old 07-04-2009, 06:49 PM   #3
Met Fan
Freericks's Avatar
Join Date: Jul 2007
Posts: 4,040

As Nick points out, the modern way to tell is look it up on the internet. Truth is that today model designations are somewhat randomly applied by different railroads and different remanufacturers.

EMD never made an original SD40-3.

Some locomotives that folks will call SD40-2s today started life as SD45s and SDP45s (and the latter, we are now told were really SD45Ms all along).

Personally, I say find a source that you like and stick with their nomenclature. Don't drive yourself crazy with the difference from different sources.
Freericks is offline   Reply With Quote