Despite being the most successful locomotive of all time, there was still room for improvement with the SD40-2, at least for a couple of western roads whose mountain routes included miles of tunnels.
Lionel has captured the unique lines of the Tunnel Motor in O Gauge. It has also been reproduced in HO and N.
©2012 Lionel LLC, used with permission.
After experiencing numerous problems with locomotives overheating, the Southern Pacific and Rio Grande turned to EMD for a modification to the SD40 design. The so-called Tunnel Motors used a different radiator, with air intakes located lower on the carbody.
Now after five decades of service, many of these locomotives have wandered to regional railroads all across the United States and beyond. The SD40T-2 can still be found earning its keep, often miles away from the nearest tunnel. Learn more about these intersting locomotives and a list of available models in the latest locomotive profile.