The EMD GP40-2 is a 4-axle diesel locomotive built by

General Motors Electro-Motive Division Progress Rail Locomotives, doing business as Electro-Motive Diesel (EMD), is an American manufacturer of diesel-electric locomotives, locomotive products and diesel engines for the rail industry. The company is owned by Caterpillar through its su ...

as part of its Dash 2 line between April 1972 and December 1986. The locomotive's power is provided by an

EMD 645E3 The EMD 645 is a family of diesel engines that was designed and manufactured by the Electro-Motive Division of General Motors. While the 645 series was intended primarily for locomotive, marine and stationary engine use, one 16-cylinder ve ...

16-

cylinder A cylinder (from ) has traditionally been a three-dimensional solid, one of the most basic of curvilinear geometric shapes. In elementary geometry, it is considered a prism with a circle as its base. A cylinder may also be defined as an infin ...

engine which generates .

Production

Standard GP40-2 production totaled 861 units, with 817 built for U.S. railroads, and 44 for Mexican railroads. In addition, three GP40P-2s, passenger versions of the GP40-2, were built in 1974 and 279 were built by

General Motors Diesel General Motors Diesel was a railway diesel locomotive manufacturer located in London, Ontario, Canada. It was established in 1949 as the Canadian subsidiary of the Electro-Motive Diesel division of General Motors (EMD). In 1969 it was re-organiz ...

(GMD) between 1974 and 1976. Total production of the GP40-2 and its variations totaled 1,143 units.

Performance

With the 62:15 gearing (65-70 mph maximum) EMD rated the GP40-2 at 55,400 lb continuous tractive effort. Some had PF21 module that reduced the output below 23 mph, lowering continuous speed down to 11 mph.

Original buyers

;GP40-2LW

;GP40P-2

SP 3197 with Peninsula Commute train 126 at San Jose, March 1985

Preservation

Sonora Baja California 2107 is now preserved in a Museum in Mexicali, MX

References

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External links