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AT&SF EMD GP50 No. 3820 near Gallup, New Mexico in October of 1985. A Roger Puta photo.

AT&SF EMD GP50 No. 3820 near Gallup, New Mexico in October of 1985. A Roger Puta photo.

Norfolk Southern GP50 No. 7069 approaches a train crossing in Charlotte, North Carolina on June 22, 2005.   Photo by Louis Waweru.

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EMD GP50 Diesel-Electric Locomotive
An EMD GP50 is a 4-axle diesel-electric locomotive built by General Motors Electro-Motive Division (EMD). It is powered by a 16-cylinder EMD 645F3B diesel engine, which can produce between 3,500 and 3,600 hp (2,610 and 2,685 kW). 278 examples of this locomotive were built by EMD between 1980 and 1985. BN 3110-3162 were all delivered with five cab seats, the final five of these having the cab lengthened 23 in (584 mm) vs. the standard EMD cab. The GP50 retains the same overall length of 59 feet 2 inches (18.03 meters) as the EMD GP38, EMD GP38-2, EMD GP39, EMD GP39-2, EMD GP40 and EMD GP40-2.

In 2014–2015 the Norfolk Southern Railway rebuilt 25 GP50s into the low-emission GP33ECO.

Original Owners

Atchison, Topeka and Santa Fe Railway

Quantity: 45
Road numbers: 3810-3854
Notes: All now in service with BNSF Railway.

Burlington Northern Railroad

Quantity: 63
Road numbers: 3100-3162
Notes: Nos. 3100-3109 ordered by St. Louis – San Francisco Railway, but delivered to BN. 3100 only unit that received Frisco colors, though with BN number. Most now in service with BNSF Railway.

Chicago and North Western Railway

Quantity: 50
Road numbers: 5050-5099
Notes: To Union Pacific Railroad; since retired.

Missouri Pacific Railroad

Quantity: 30
Road numbers: 3500-3529

Southern Railway

Quantity: 90
Road numbers: 7003-7092
Notes: High hood units; passed to successor NS. All retired or rebuilt to different configurations, 25 being converted to GP33ECO.

EMD GP50 Overview
Type and origin
Power type: Diesel-electric
Builder: General Motors Electro-Motive Division (EMD)
Model: GP50
Build date: 1980 – 1985
Total produced: 278
​ • AAR B-B
Gauge: 4 ft 8 1⁄2 in (1,435 mm) standard gauge
Length: 59 ft 2 in (18.03 m)
Prime mover: EMD 16-645F3B
Engine type: V16 diesel
Cylinders: 16
Performance figures
Power output: 3,500–3,600 hp (2,610–2,685 kW)

See also:


EMD Diesel-Electric Locomotives

Diesel-Electric Locomotives

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