The EMD GP38 is a four-axle

diesel-electric locomotive A diesel locomotive is a type of railway locomotive in which the prime mover is a diesel engine. Several types of diesel locomotives have been developed, differing mainly in the means by which mechanical power is conveyed to the driving wheels ...

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 ...

between January 1966 and December 1971. The locomotive's

prime mover Prime mover may refer to: Philosophy *Unmoved mover, a concept in Aristotle's writings Engineering * Prime mover (engine), motor, a machine that converts various other forms of energy (chemical, electrical, fluid pressure/flow, etc) into energy ...

was an

EMD 645 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 versio ...

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 that generated . The company built 706 GP38s for North American railroads. In 1972, EMD began making an updated model, the

GP38-2 The EMD GP38-2 is an American four-axle diesel-electric locomotive built by General Motors, Electro-Motive Division. Part of the EMD Dash 2 line, the GP38-2 was an upgraded version of the earlier GP38. Power is provided by an EMD 645E 16-cyl ...

, as part of its

Dash-2 The EMD Dash 2 is a line of diesel-electric locomotives introduced by General Motors' Electro-Motive Division (EMD) on January 1, 1972. Designations of these models were those of the former models with "-2" added (e.g., the SD40 was replaced by ...

line.

Original orders

Rebuilds

A number of GP38s have been rebuilt into the equivalent of a GP38-2. Conversely, a number of higher horsepower ''40 Series'' locomotives have been rebuilt into the equivalent of a GP38-2 (GP38AC), by the removal of the

turbocharger In an internal combustion engine, a turbocharger (often called a turbo) is a forced induction device that is powered by the flow of exhaust gases. It uses this energy to compress the intake gas, forcing more air into the engine in order to pro ...

and the substitution of twin

Roots blower The Roots-type blower is a positive displacement lobe pump which operates by pumping a fluid with a pair of meshing lobes resembling a set of stretched gears. Fluid is trapped in pockets surrounding the lobes and carried from the intake si ...

s. In 2007,

Norfolk Southern The Norfolk Southern Railway is a Class I freight railroad in the United States formed in 1982 with the merger of Norfolk and Western Railway and Southern Railway. With headquarters in Atlanta, the company operates 19,420 route miles (31, ...

rebuilt #2911 which is an ex Penn Central GP38 into an experimental

zero-emissions Zero emission refers to an engine, motor, process, or other energy source, that emits no waste products that pollute the environment or disrupt the climate. Zero emission engines Vehicles and other mobile machinery used for transport (over land, se ...

Battery-Electric locomotive known as the Altoona Works BP4. The new locomotive was renumbered as NS #999.

Preservation

Conway Scenic Railroad The Conway Scenic Railroad is a heritage railroad in North Conway, New Hampshire, United States, owned by Profile Mountain Holdings Corp. The railroad operates over two historic railway routes: a line from North Conway to Conway that was f ...

252, built as

Maine Central The Maine Central Railroad Company was a U. S. Class I railroad in central and southern Maine. It was chartered in 1856 and began operations in 1862. By 1884, Maine Central was the longest railroad in New England. Maine Central had expanded to w ...

252, is in Maine Central ‘harvest gold’ paint with Conway Scenic reporting marks, and currently operates on excursions on the former MEC Notch Route. This locomotive suffered a broken crankshaft in August 2020 and has since been repaired. *Conway Scenic Railroad 255, built as Maine Central 255, is in

Vermont Railway The Vermont Railway is a shortline railroad in Vermont and eastern New York, operating much of the former Rutland Railway. It is the main part of the Vermont Rail System, which also owns the Green Mountain Railroad, the Rutland's branch to Be ...

Red paint with Conway Scenic reporting marks. * TAG Railway 80 is preserved in operational condition at the

Tennessee Valley Railroad Museum The Tennessee Valley Railroad Museum is a railroad museum and heritage railroad in Chattanooga, Tennessee. The Tennessee Valley Railroad Museum was founded as a chapter of the National Railway Historical Society in 1960 by Paul H. Merriman an ...

. *

West Chester Railroad The West Chester Railroad is a privately owned and operated tourist railroad that runs between Market Street in West Chester, Pennsylvania, in Chester County, and the village of Glen Mills, Pennsylvania, in Delaware County. It operates on of ...

7706, built as

Penn Central The Penn Central Transportation Company, commonly abbreviated to Penn Central, was an American class I railroad that operated from 1968 to 1976. Penn Central combined three traditional corporate rivals (the Pennsylvania, New York Central and the ...

7706, is preserved and operates on tourist trains on the former PRR line. *

Chessie System Chessie System, Inc. was a holding company that owned the Chesapeake and Ohio Railway (C&O), the Baltimore and Ohio Railroad (B&O), the Western Maryland Railway (WM), and Baltimore and Ohio Chicago Terminal Railroad (B&OCT). Trains operated unde ...

3802, built as

Baltimore & Ohio The Baltimore and Ohio Railroad was the first common carrier railroad and the oldest railroad in the United States, with its first section opening in 1830. Merchants from Baltimore, which had benefited to some extent from the construction of ...

3802, is preserved at the Baltimore Ohio Railroad Museum in Baltimore, Maryland

References

* * * Sarberenyi, Robert.
EMD GP38 and GP38AC Original Owners
'

External links

{{Amtrak rolling stock

GP38 The EMD GP38 is a four-axle diesel-electric locomotive built by General Motors Electro-Motive Division between January 1966 and December 1971. The locomotive's prime mover was an EMD 645 16-cylinder engine that generated . The company built 70 ...

B-B locomotives Diesel-electric locomotives of the United States Railway locomotives introduced in 1966 Freight locomotives Standard gauge locomotives of the United States Standard gauge locomotives of Canada Standard gauge locomotives of Mexico Diesel-electric locomotives of Canada Diesel-electric locomotives of Mexico

Original orders

Rebuilds

Preservation

See also

References

External links