Posted by xBNSFer on January 11, 2024 
Those would be 20 cylinder behemoths (SD45s used a 20 cylinder 654 diesel, 16 would be SD40s).
Posted by A J Erlichman on January 11, 2024 
Weren't SD45s V20 engines?
Posted by Scott Haugland on January 11, 2024 
I never knew NS had SD45's as slug mothers. And Sid, I know you know that SD45's are powered by V-20's, so I'm not sure if NS had SD45's repowered with V-16's, like Morrison Knudsen did for the Southern Pacific in the 1990's.
Posted by Sid Vaught on January 13, 2024 
Oops, I knew that. Slip of the pen or whatever. Thanks all.
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