EMD GP38  Diesel-Electric Locomotive
The EMD GP38 is a 4-axle diesel-electric locomotive built by General Motors Electro-Motive Division between January 1966 and December 1971. The locomotive's power was provided by an EMD 645 16-cylinder engine which generated 2,000 horsepower (1.49 MW).

The company built 706 GP38s for North American railroads. In 1972, it was replaced by an updated model, the GP38-2.

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 and the substitution of twin Roots blowers.

Norfolk Southern has rebuilt a 1969 GP38, the NS 999, into an experimental electric locomotive, the Altoona Works BP4.

EMD GP38 Overview
Type and origin
Power type: Diesel-electric
Builder: General Motors Electro-Motive Division (GM-EMD), General Motors Diesel (GMD)
Model: GP38
Build date: January 1966 – December 1971
Total produced: 706
Specifications
Configuration:
​ • AAR B-B
 • UIC Bo'Bo'
Gauge: 4 ft 8 1⁄2 in (1,435 mm)
Fuel capacity: 2,600 US gal (9,800 l; 2,200 imp gal)
Prime mover: EMD 16-645
Aspiration: Roots type supercharger
Cylinders: 16
Performance figures
Power output: 2,000 hp (1.49 MW)
Career
Locale: North America

See also:

EMD GP38-2

Electro-Motive

EMD Diesel-Electric Locomotives

Diesel-Electric Locomotives

Locomotives

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Gateway Western Railroad EMD GP38 No. 2037.

By terry cantrell - originally posted to Flickr as GWWR 2037, CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=3919143