Real Train Database

Real-world prototypes that inspired HO scale models

Every HO scale model is based on a real-world prototype — the actual locomotive or railcar that inspired its design. Understanding the prototype helps modelers choose accurate paint schemes, match equipment to the correct era, and build realistic consists. An EMD SD40-2 in BNSF heritage paint, for instance, tells a different story than one in original Burlington Northern green.

The TrainDex prototype database covers hundreds of diesel locomotive families (EMD, GE, Alco, and others), freight car types (boxcars, covered hoppers, tank cars, gondolas, and well cars), and passenger equipment (Budd streamliners, Pullman heavyweights, Amtrak Superliners). Each entry includes builder history, production dates, technical specifications, operating railroads, and a cross-reference to every HO scale model available from tracked manufacturers.

Total Prototypes
243
Diesel Locomotives
188
Freight Cars
40
Passenger Cars
15

188 results in Diesel Locomotive

Technical Specifications

DesignationEMD BL1
BuilderEMD
TypeRoad Switcher
Years Built1948
Total Built1
Horsepower1500

History

The EMD BL1 was a single prototype diesel-electric locomotive constructed by General Motors Electro-Motive Division in September 1947, assigned demonstrator number 499 and internally designated as EM…

Technical Notes

The BL1 was powered by an EMD 567B prime mover, a two-stroke V-type diesel engine that produced 1,500 horsepower and drove the locomotive through a DC electric…

Technical Specifications

DesignationEMD BL2
BuilderEMD
TypeRoad Switcher
Years Built1948-1949
Total Built59
Horsepower1500

History

The EMD BL2 emerged in the late 1940s as Electro-Motive Division's attempt to compete in the growing road switcher market without fully abandoning the carbody styling philosophy that had defined its …

Technical Notes

The BL2 was powered by the EMD 567B prime mover, a two-stroke diesel engine that produced 1,500 horsepower and was also used in various other EMD products of t…

Technical Specifications

DesignationEMD DD35
BuilderEMD
TypeRoad Switcher (cabless)
Years Built1963
Total Built3
Horsepower5000

History

The EMD DD35 emerged from a dialogue between Union Pacific Railroad and General Motors' Electro-Motive Division in the early 1960s, when Union Pacific expressed interest in extremely high-horsepower …

Technical Notes

The DD35 was a cabless booster unit rated at 5,000 horsepower, achieved by mounting two EMD 567D3A prime movers on a single elongated frame in a back-to-back c…

Technical Specifications

DesignationEMD DD35A
BuilderEMD
TypeRoad Switcher
Years Built1965
Total Built15
Horsepower5000

History

The EMD DD35A was a cab-equipped diesel-electric locomotive built by General Motors Electro-Motive Division exclusively for the Union Pacific Railroad in 1965. It represented a direct evolution of th…

Technical Notes

The DD35A was in essence two EMD GP35 power assemblies united on a single extended frame, with each unit contributing one 567D3A prime mover for a combined out…

Technical Specifications

DesignationEMD DDA40X
BuilderEMD
TypeRoad Switcher
Years Built1969-1971
Total Built47
Horsepower6600

History

The EMD DDA40X was developed by the Electro-Motive Division of General Motors exclusively for the Union Pacific Railroad, emerging from a long Union Pacific tradition of pursuing exceptionally high-p…

Technical Notes

The DDA40X was powered by two EMD 16-cylinder 645E3 prime movers, together producing 6,600 horsepower and making it the most powerful diesel-electric locomotiv…

Operating Railroads

Model Manufacturers

Models by: Athearn

Available as HO Models (44)

Technical Specifications

DesignationEMD E1A/E1B
BuilderEMD
TypePassenger Cab
Years Built1937-1938
Total Built8A+4B
Horsepower1800

History

The EMD E1 was among the earliest passenger diesel locomotives produced by the Electro-Motive Division of General Motors, emerging in 1937 as a direct successor to the experimental EA units built for…

Technical Notes

Each E1 locomotive was powered by two Winton 201-A prime movers, a sixteen-cylinder two-stroke diesel engine that had been developed in the early 1930s and was…

Technical Specifications

DesignationEMD E2A/E2B
BuilderEMD
TypePassenger Cab
Years Built1937
Total Built2A+1B
Horsepower1800

History

The EMD E2A and E2B were diesel-electric passenger locomotives built by the Electro-Motive Corporation in 1937, representing an evolution of the early streamliner power units that had begun to transf…

Technical Notes

Each of the E2 locomotives was powered by a pair of Winton 201-A diesel engines, the same prime mover that had been used in several earlier Electro-Motive stre…

Technical Specifications

DesignationEMD E3A/E3B
BuilderEMD
TypePassenger Cab
Years Built1938-1940
Total Built18A+16B
Horsepower2000

History

The EMD E3 emerged from Electro-Motive Corporation's La Grange, Illinois facility in September 1938 as the fourth model in the company's growing line of E-series passenger diesel locomotives. The dem…

Technical Notes

The E3A and E3B units each developed 2,000 horsepower through the use of two twelve-cylinder EMD 567 engines mounted in the locomotive's engine compartment, ea…

Technical Specifications

DesignationEMD E4A/E4B
BuilderEMD
TypePassenger Cab
Years Built1938-1939
Total Built18A+5B
Horsepower2000

History

The EMD E4 was a passenger locomotive produced by the Electro-Motive Division of General Motors between 1938 and 1939, representing a continuation of the successful E-unit lineage that EMD had been d…

Technical Notes

The E4 was powered by two EMD 567 prime movers, each contributing to a combined output of 2,000 horsepower, which was transmitted to the rails through a DC tra…

Technical Specifications

DesignationEMD E5A/E5B
BuilderEMD
TypePassenger Cab
Years Built1940-1941
Total Built11A+5B
Horsepower2000

History

The EMD E5 was a passenger locomotive produced by the Electro-Motive Division of General Motors between 1940 and 1941, representing a relatively brief but notable chapter in the development of stream…

Technical Notes

Each E5A cab unit was rated at 2,000 horsepower, produced by a pair of EMD 567 prime movers, each generating 1,000 horsepower. The 567 series engine, which bec…

Technical Specifications

DesignationEMD E6A/E6B
BuilderEMD
TypePassenger Cab
Years Built1939-1942
Total Built118A+5B
Horsepower2000

History

The EMD E6 emerged in late 1939 as the seventh generation of Electro-Motive's passenger diesel lineup, a series of locomotives that had been steadily refining the concept of high-speed diesel-powered…

Technical Notes

The E6A and E6B were powered by a pair of General Motors 567-series prime movers, each a 12-cylinder, two-stroke diesel engine producing 1,000 horsepower, for …

Technical Specifications

DesignationEMD E7A/E7B
BuilderEMD
TypePassenger Cab
Years Built1945-1949
Total Built428A+82B
Horsepower2000

History

The EMD E7 represented a pivotal moment in American railroad history, arriving at precisely the point when the nation's passenger railroads were emerging from the demands of wartime and looking to mo…

Technical Notes

The E7 was powered by two EMD 567A prime movers, each a turbocharged V-16 diesel engine, combining to produce a total output of 2,000 horsepower. Power was tra…

Technical Specifications

DesignationEMD E8A/E8B
BuilderEMD
TypePassenger Cab
Years Built1949-1954
Total Built450A+46B
Horsepower2250

History

The EMD E8 represented the mature culmination of Electro-Motive Division's long-running E series of passenger locomotives, which had defined American passenger train motive power since the mid-1930s.…

Technical Notes

The E8A and E8B were powered by two General Motors EMD 567B diesel engines, each displacing 567 cubic inches per cylinder across a sixteen-cylinder configurati…

Technical Specifications

DesignationEMD E9A/E9B
BuilderEMD
TypePassenger Cab
Years Built1954-1964
Total Built100A+44B
Horsepower2400

History

The EMD E9 was the tenth and final member of Electro-Motive Division's celebrated E-unit family, produced at the company's La Grange, Illinois facilities from April 1954 through January 1964. Over th…

Technical Notes

The E9 was powered by a pair of EMD 567C engines, each a twelve-cylinder, two-stroke, Roots-blown diesel arranged in a 45-degree V configuration with a bore an…

Technical Specifications

DesignationEMD EA/EB
BuilderEMD
TypePassenger Cab
Years Built1937
Total Built6A+5B
Horsepower1800

History

The EA and EB were among the earliest passenger diesel locomotives produced by the Electro-Motive Corporation of La Grange, Illinois, entering production in May 1937 for the Baltimore and Ohio Railro…

Technical Notes

Each EA or EB unit was powered by a pair of Winton 201-A diesel engines, each rated at 900 horsepower, giving a combined output of 1,800 horsepower per unit. T…

EMD F125 Spirit

F125 Spirit

Technical Specifications

DesignationEMD F125 Spirit
BuilderEMD
TypePassenger Cab
Years Built2002-2005
Total Built2
Horsepower4700

History

The EMD F125 Spirit is a passenger diesel locomotive developed by Electro-Motive Diesel for the North American commuter rail market, representing the manufacturer's first new passenger locomotive off…

Technical Notes

The F125 Spirit is configured as a four-axle locomotive riding on a B-B wheel arrangement and is powered by a Caterpillar C175-20 twenty-cylinder diesel engine…

Technical Specifications

DesignationEMD F2
BuilderEMD
TypeFreight Cab
Years Built1946
Total Built104
Horsepower1350

History

The EMD F2 was a diesel-electric freight locomotive produced by General Motors' Electro-Motive Division over a remarkably short window, from July 1946 through November 1946. In total, 104 units were …

Technical Notes

The F2 rode on a B-B wheel arrangement, with two two-axle trucks supporting each unit, and was powered by the EMD 567B prime mover driving a DC electrical tran…

Model Manufacturers

Models by: Athearn

Technical Specifications

DesignationEMD F3
BuilderEMD
TypeFreight Cab
Years Built1945-1949
Total Built1111
Horsepower1500

History

The EMD F3 emerged from General Motors' Electro-Motive Division as the third entry in the celebrated F-unit series of cab unit diesel locomotives, entering production in July 1945 and continuing thro…

Technical Notes

The F3 was powered by a 16-cylinder version of EMD's 567B series diesel engine, a two-stroke, mechanically aspirated design arranged in a 45-degree V configura…

Model Manufacturers

Models by: Athearn · Bachmann · Broadway Limited · Intermountain · Kato

Available as HO Models (361)

Technical Specifications

DesignationEMD F40PH
BuilderEMD
TypePassenger Cab
Years Built1975-1992
Total Built473
Horsepower3000

History

The EMD F40PH emerged directly from Amtrak's dissatisfaction with its earlier motive power acquisitions. When Amtrak began operations in 1971 it inherited a collection of aging and mechanically misma…

Technical Notes

The F40PH was derived from EMD's GP40-2 freight road switcher and shared that locomotive's turbocharged 645E3 engine, a V16 two-stroke water-cooled diesel deve…

Technical Specifications

DesignationEMD F40PH-2
BuilderEMD
TypePassenger Cab
Years Built1985-1992
Total Built~60
Horsepower3000

History

The EMD F40PH-2 emerged in 1985 as a refined successor to the original F40PH, which had by that point already transformed American passenger rail operations. Where the original F40PH had been conceiv…

Technical Notes

The F40PH-2 was powered by the turbocharged EMD 645E3 V16 two-stroke diesel engine, the same prime mover that underpinned the original F40PH, but tuned to prod…

EMD F40PHM-2

F40PHM-2

Technical Specifications

DesignationEMD F40PHM-2
BuilderEMD
TypePassenger Cab
Years Built1991-1992
Total Built30
Horsepower3000

History

The EMD F40PHM-2 represented the final production variant of the long-running F40PH family, with all 30 units built by General Motors Electro-Motive Division between 1991 and 1992. The entire product…

Technical Notes

The F40PHM-2 was powered by the turbocharged EMD 645E3 sixteen-cylinder two-stroke diesel engine, producing 3,000 horsepower, the same prime mover that had pow…

Technical Specifications

DesignationEMD F45
BuilderEMD

History

The EMD F45 emerged from a collaborative relationship between General Motors' Electro-Motive Division and the Atchison, Topeka and Santa Fe Railway in the late 1960s. Santa Fe had already worked with…

Technical Notes

The F45 was powered by the EMD 645E3 prime mover in its twenty-cylinder configuration, producing 3,600 horsepower and driving a Co-Co wheel arrangement through…

Model Manufacturers

Models by: Athearn

Technical Specifications

DesignationEMD F5
BuilderEMD

History

The designation F5 was never an officially released or widely marketed locomotive model from General Motors' Electro-Motive Division in the way that the F3 or F7 were. Rather, the F5 designation aros…

Technical Notes

The locomotives informally designated as F5 shared the fundamental mechanical architecture of the EMD F3, including the 16-cylinder 567B prime mover producing …

Model Manufacturers

Models by: Athearn

Technical Specifications

DesignationEMD F50CM
BuilderEMD

History

I need to be straightforward here: I do not have confident, verified information about an EMD model specifically designated the F50CM. EMD produced numerous locomotive models over the decades, includ…

Technical Notes

Without verified technical data for the F50CM specifically, it would not be appropriate to describe its mechanical configuration, prime mover, horsepower ratin…

Model Manufacturers

Models by: Athearn

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