description EMD GP50 Overview
The EMD GP50 is a four-axle diesel-electric road-switcher built by General Motors' Electro-Motive Division from 1980 to 1985. Powered by a turbocharged 16-cylinder 645-series diesel engine and rated at 3,500 horsepower, it represented a higher-output development of EMD's GP40 family before the GP60. North American railroads purchased it primarily for fast freight and general road service, and many examples were later rebuilt or derated as operating needs changed.
help EMD GP50 FAQ
What engine and horsepower does the EMD GP50 have?
The GP50 uses a turbocharged 16-cylinder EMD 645F-series diesel engine. It was rated at about 3,500 horsepower, making it a higher-output four-axle road-switcher than the earlier GP40 family.
When was the GP50 built, and how many were produced?
EMD produced the GP50 from 1980 to 1985. Total production is commonly listed as 278 locomotives.
Which railroad received the first EMD GP50 locomotives?
Chicago and North Western received the first GP50 deliveries in the summer of 1980. The model was built for American freight railroads that wanted more power from a four-axle locomotive.
What was special about the GP50's wheel-slip control?
The GP50 introduced EMD's Super Series wheel-slip control, which allowed controlled wheel creep to improve adhesion. It was paired with D87 traction motors and the 16-645F engine.
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