The reference for locomotives and railcars


Page views since 2023-01-26: 302465
Electro-Motive Division GP30
United States | 1961 | 948 produced
Two Santa Fe GP30s in 1985 in Flagstaff, Arizona
Two Santa Fe GP30s in 1985 in Flagstaff, Arizona
Roger Puta

At the end of the 1950s, General Electric was still new to the diesel-electric road switcher market and was trying to win market share from market leader EMD. When GE introduced the U25B, EMD felt compelled to develop a comparable locomotive. The U25B delivered 2,500 hp, while EMD's four-axle models delivered a maximum of 2,000 hp. In addition, the GE locomotive had a sophisticated system for supplying fresh air for cooling various assemblies, which at the same time kept dirt and dust away, but still made maintenance easy. Therefore the GP30 was developed while the GP20 had just appeared on the market. The type designations, which indicate the power in hp x 100, had only recently been introduced, they now deviated from them again.

The problem with fresh air was solved by redesigning the airflow, which gave the GP30 a distinctive crest. This ran from above the driver's cab to the fan housing of the optionally available dynamic brake. With the GP20, EMD encountered the problem of being able to convert a maximum of 2,000 hp with four traction motors. With minor adjustments, it was finally possible to get another 250 hp out. Although not quite at the level of the U25B, it was hoped that railroads that had been using EMD locos for a decade or two would buy this locomotive. This recipe worked because, despite the shorter production time, 948 units could be sold, while the competing model was only built 478 times. Union Pacific was the only company to buy 40 B units, some of which were equipped with steam generators for use in front of passenger trains. Over time, many GP30s have been rebuilt to extend their life. Some were still in use after 50 years and some have just been rebuilt, which will further extend their service life.

ManufacturerElectro-Motive Division
Axle configB-B 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length56 ft 2 in
Wheelbase41 ft
Fixed wheelbase9 ft
Service weight245,000 lbs
Adhesive weight245,000 lbs
Axle load61,250 lbs
Power sourcediesel-electric
Top speed83 mph
Starting effort60,500 lbf
EngineEMD 16-567D3
Engine typeV16 diesel
Engine output2,250 hp (1,678 kW)
Power Plant
Calculated Values
diesel locomotive
last changed: 03/2022

We use cookies to save the following settings:

  • selected navigation structure
  • selected language
  • preferred units
  • spelling of railway company names

If you refuse the use of cookies, the settings will only be retained for the current session and will be reset to the default values the next time you visit the site.

Display of units

Here you can set the desired unit system for the technical data.

  • Metric: Lengths in meters, weights in tonnes, and volumes in cubic meters
  • Imperial (UK): Lengths in feet/inches, weights in long tons and volumes in imperial gallons
  • Imperial (US): Lengths in feet/inches, weights in pounds, and volumes in US gallons
  • Individual: Depends on the country of origin of each locomotive
Operator names

Here you can set the display of railway company names.

  • Short: Abbreviation or short form of the name
  • Standard: commonly used name, partially translated to English
  • Complete: full name in local language