So I’m trying to figure out what Railroads in the US purchased GE C40-8Ws and what the specs of each one were from the default specs from GE. I know the original Demo unit had a Tri-Window cab and was short-lived and was a B36-8 rebuild (at least I think it was a B36-8)
I know CSX purchased some new with some from the Conrail split merger, NS never got any new, just ones from the Conrail split merger. Union Pacific, I also know, had some ordered new, with others being uprated to 4,135 HP and being redesignated C41-8W - CSX was the only railroad (to my knowledge) that had ordered the C44-8W - a test bed for Dash-9 Technology All were redesignated C44-9W, I think some got scrapped or rebuilt - still unsure on that. I know FOR SURE BNSF or ATSF had C40-8Ws before the majority were sold to CN and other railroads (I only know for sure because of the Warbonnet paint scheme - whenever someone mentions an ATSF warbonnet, I think the Dash-8 series.
EDIT: Here are some examples:
Credit to the following for the images:
Scott Williams - UP C40-8W 9356
landrover - NS C40-8W 8314
Sam Beck - CR C40-8W 6081
Ed Lewis Jr. - CSX 7300
Carter Buchannan - CSX C40-8W 7650
Craig Walker - ATSF C40-8W 800