The EMD SD40 is an American 6-axle diesel-electric locomotive built by General Motors Electro-Motive Division between January 1966 and August 1972. 1,268 locomotives were built between 1966 and 1972.

Feb 20, 2025 · The SD40 series was EMD's turbocharged models in its new 645 line. The standard SD40 sold more than 1,200 examples, illustrating the industry's desire for higher horsepower six-axle designs. However, the builder could never have envisioned its "Dash 2" variant - the SD40-2 - would go on to become one of its all-time best sellers.

The EMD SD40-2 is a 3,000-horsepower (2,200 kW) C-C diesel–electric locomotive built by EMD from 1972 to 1989. The SD40-2 was introduced in January 1972 as part of EMD's Dash 2 series, competing against the GE U30C.

EMD SD40 and SD40A; Data Sheet Information Compiled by: JEAN-DENIS BACHAND: New: 1 September 2006 : Artwork by: Jean-Denis Bachand-Engine Builder: EMD: Engine: 645E3 16 cylinder: Bore & Stroke: 8.5" X 10" RPM (Maximum / Minimum) 900 / 315 : Main Generator: GM - AR10: Horsepower: 3000:

Mar 25, 2024 · History and overview of the EMD SD40 six-axle, 3,000-hp diesel locomotive and the railroads that operated it

The SD40T-2 is equipped with a 16-cylinder EMD 645E3 diesel engine producing 3,000 horsepower (2,240 kW). 312 SD40T-2s were built for three railroads in the United States between April 1974 and July 1980.

Nov 14, 2019 · As the SD45’s popularity waned, railroads turned to EMD’s next most powerful model, the 3,000 HP SD40. Using the 16-645E3 turbocharged engine, the SD40 represented the first truly versatile 6 axle locomotive.

The EMD (Electro Motive Division) SD40 is a type of six-axle, 16-cylinder, 3,000hp diesel locomotive built from 1966 to 1972 (though first introduced in 1964). It is the predecessor or precursor to the SD40-2, and the initial successor to the SD35.

General Motors’ Electro-Motive Division (EMD) produced more than 4,000 SD40-2 diesel locomotives from the model’s introduction in early 1972 until the last unit was built in 1984. Considered by many to be among the finest EMD models ever offered, many SD40-2s are still going strong in 2023.

Comprehensive EMD SD40-2 Roster. The roster below is comprehensive for Conrail's SD40-2 between their arrival on Conrail starting in June 1977 and their last day of Conrail service. Except for some wrecked units, nearly all Conrail's SD40-2's were transferred to Norfolk Southern or CSX on June 1, 1999.