EMD GP60 Technical Specifications: A Detailed Overview

EMD GP60 Technical Specifications: A Detailed Overview



The EMD GP60 is a powerful diesel-electric locomotive produced by Electro-Motive Division (EMD) between 1985 and 1992. Known for its high horsepower, fuel efficiency, and versatility, the GP60 has been a staple in freight railroads across North America. In this article, we’ll take a deep dive into the technical specifications of the EMD GP60, covering its engine, power output, design features, and operational capabilities.

Engine and Power Output

At the heart of the EMD GP60 is the EMD 16-710G3A diesel engine, a 16-cylinder, turbocharged, two-stroke engine. This engine produces an impressive 3,800 horsepower (2,800 kW), making the GP60 one of the most powerful four-axle locomotives of its time. The locomotive uses an AR15 alternator to generate electricity, which powers four D87B traction motors for propulsion.

Key Engine Specifications:

  • Engine Type: EMD 16-710G3A (Turbocharged V16)
  • Horsepower: 3,800 hp (2,800 kW)
  • Alternator: AR15
  • Traction Motors: D87B (Four units)
  • RPM Range: 200 – 904 rpm
  • Fuel Capacity: 3,700 gallons (14,000 liters)

Design and Dimensions

The EMD GP60 features a classic road-switcher design with a high short hood or a low short hood, depending on the railroad's preference. The locomotive has a rugged build, making it suitable for both mainline and branch line operations.

Physical Dimensions:

  • Length: 59 feet 9 inches (18.21 meters)
  • Width: 10 feet 4 inches (3.15 meters)
  • Height: 15 feet 7 inches (4.75 meters)
  • Weight: 283,000 lbs (128,370 kg)

The GP60 rides on Blomberg M trucks, which provide a smooth ride and excellent weight distribution.

Performance and Speed

One of the standout features of the GP60 is its high-speed capability compared to earlier GP models. It can reach a maximum speed of 70 mph (113 km/h), making it suitable for fast freight services. With a starting tractive effort of 92,000 lbf (409 kN) and a continuous tractive effort of 64,000 lbf (285 kN), the GP60 delivers strong pulling power, even on steep grades.

Performance Highlights:

  • Maximum Speed: 70 mph (113 km/h)
  • Starting Tractive Effort: 92,000 lbf (409 kN)
  • Continuous Tractive Effort: 64,000 lbf (285 kN)

Variants of the GP60

The EMD GP60 was produced in different variants to meet specific railroad requirements:

  1. Standard GP60 – The basic version with a conventional cab.
  2. GP60M – Features a wide-nose, safety cab for improved crew protection, primarily used by Santa Fe.
  3. GP60B – A cabless booster unit, also used by Santa Fe, designed to provide additional power without a crew cab.

Usage and Legacy

The GP60 was widely used by major railroads like Santa Fe (now BNSF), Southern Pacific (now Union Pacific), and Norfolk Southern. Many GP60s are still in service today, either in their original roles or repurposed for local and short-haul freight operations. Some have been rebuilt with modern enhancements to improve fuel efficiency and emissions.

Notable Railroads Operating GP60s:

  • BNSF Railway (Former Santa Fe units)
  • Union Pacific (Former Southern Pacific units)
  • Norfolk Southern
  • Shortline and regional railroads

Conclusion

The EMD GP60 remains a remarkable locomotive due to its high horsepower, durable design, and versatility. Its combination of speed and power made it a favorite for high-priority freight trains, and many units continue to operate decades after their production. For railfans and model railroad enthusiasts, the GP60 represents a crucial transition in locomotive technology from the 1980s to the modern era.

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