The EMC E3 is a 2,000 horsepower, A1A-A1A passenger train locomotive that was manufactured by Electro-Motive Corporation of La Grange, Illinois. The EMC demonstrator #822 was released from La Grange for test on September 12, 1938.
Aspiration: Roots-type supercharger
Builder: Electro-Motive Diesel (EMC)
Total produced: 17
Build date: September 1938 – June 1940
Only one E3, former Atlantic Coast Line Railroad No. 501, has been preserved. It currently resides at the North Carolina Transportation Museum.