GP40-2 Diesel Locomotive

Prototype Information

EMD rolled out the GP40-2 in 1972 as part of its Dash 2 line, which focused on reliability and standardized parts. The locomotive built on the earlier GP40 but added improved electronics, modular controls, and stronger traction systems. With a 3,000-horsepower 16-cylinder 645E3 engine, the GP40-2 gave railroads the speed and muscle they needed for mainline freights and heavy locals.

Railroads quickly put the GP40-2 to work. Conrail, Chessie System, Union Pacific, Southern Pacific, and Burlington Northern all bought large fleets. Canadian National and Canadian Pacific picked up special wide-nose versions for their own service. Crews valued the locomotive’s consistent performance, and railroads leaned on its reliability through the 1970s and 1980s.

Production ran until 1986, topping 1,100 units plus several hundred Canadian variants. Many GP40-2s still haul freight today, working for Class I railroads, short lines, and leasing companies. Tough construction and versatile power have kept the GP40-2 in service for more than fifty years, making it one of EMD’s most successful four-axle designs.