EMD Model 40

The EMD Model 40 was a two-axle diesel-electric locomotive built by Electro-Motive Corporation (EMC), and its corporate successor, General Motors' Electro-Motive Division (EMD) between August 1940 and April 1943. Nicknamed "critters", eleven examples of this locomotive were built. Powered by twin General Motors Detroit Diesel 6-71 diesel engines, which produce a combined 300 horsepower (224 kW). Original buyers included the Electro-Motive Corporation/EMD Plant #2 switcher, Defense Plant Corporation-4 units, the United States Army 3 units, and the United States Navy 2 units, General Motors Cleveland Diesel Division 1 unit.

EMD Model 40
EMD Model 40.jpg
An EMD Model 40 at the Travel Town Museum in Los Angeles, California.
Type and origin
Power typeDiesel-electric
BuilderGeneral Motors Electro-Motive Division (EMD)
ModelModel 40
Build dateApril 1940 – April 1943
Total produced11
Gauge4 ft 8+12 in (1,435 mm) standard gauge
Loco weight84,000 lb (38,000 kg)
Fuel typeDiesel fuel
Prime mover(2) Detroit Diesel 6-71
Engine typeInline 2-stroke diesel
GeneratorDC generator
Traction motorsDC traction motors
Cylinders6 (2)
Transmissiondiesel electric
Loco brakeWestinghouse 14-ET Air brake
Performance figures
Power output300 hp (224 kW)
LocaleNorth America

Known locomotivesEdit


  • Extra 2200 South Issue #53 pages 22–23.