description EMD SD40-2 Overview
The EMD SD40-2 is a widely used American six-axle diesel-electric locomotive manufactured by General Motors’ Electro-Motive Division. Notable for its robust design and reliability, it became a staple of freight operations across North America. The locomotive is primarily utilized by railroads transporting bulk commodities and general merchandise, serving as a workhorse for many companies.
insights Ranking position
EMD SD40-2 ranks #6 of 237 in the Locomotive ranking, behind LNER Class A3 Flying Scotsman, ahead of Southern Pacific GS-4 Daylight 4449.
balance EMD SD40-2 Pros & Cons
- Extremely reliable engine
- Highly versatile design
- Widely available spare parts
- Poor fuel efficiency
- High exhaust emissions
help EMD SD40-2 FAQ
Who manufactured the EMD SD40-2 locomotive?
The EMD SD40-2 was manufactured by the Electro-Motive Division (EMD) of General Motors. It was introduced in the early 1970s and quickly became the standard for heavy freight operations across North America.
Why was the EMD SD40-2 so popular for freight railroads?
The locomotive was prized for its robust design, incredible reliability, and the introduction of the modular 'Dash 2' electrical system. Its ease of maintenance and powerful 3,000-horsepower 16-cylinder engine made it the ultimate workhorse for freight operations.
What does the 'SD' stand for in the EMD SD40-2?
In EMD's naming convention, 'SD' stands for 'Special Duty,' which historically indicated models equipped with six axles rather than four. This six-axle C-C wheel arrangement provided better weight distribution and increased tractive effort for pulling heavy loads.
How many EMD SD40-2 locomotives were built?
General Motors produced nearly 4,000 units of the SD40-2 between 1972 and 1989. Because of this massive production run, it is considered one of the most successful and recognizable diesel-electric locomotives ever built.
explore Explore More
Similar to EMD SD40-2
See all arrow_forward
Reviews & Comments
Write a Review
Be the first to review
Share your thoughts with the community and help others make better decisions.
