The EMD GP9 is a four-axle diesel-electric locomotive built by General Motors' Electro-Motive Division between 1954 and 1959. The GP9 succeeded the GP7 as the second model of EMD's General Purpose (GP) line, [1] incorporating a new sixteen- cylinder engine which generated 1,750 horsepower (1.30 MW). [2] .

Jul 1, 2008 · As far as as-built from the factory, the only models are GP9B and GP9M. The GP9B is a standard GP9 without a cab, only PRR (40) and UP (125) bought them. There are a few others that were de-cabbed in railroad shops.

Dec 19, 2024 · One of the PRR's units can be seen in the above photo. The GP9's extreme versatility is, of course, what made them so successful, and many continue to be found today in freight service on both short lines and regionals (as well as museums and tourist lines).

An EMD GP9 is a four-axle road switcher diesel-electric locomotive built by General Motors' Electro-Motive Division produced between 1954 and 1959 and it is powered by a sixteen-cylinder engine which generated 1,750 horsepower. The GP9 succeeded the GP7. The lettering "GP" stands for "general purpose".

"B units" were mostly utilized by the PRR (later Penn Central) as well as the UP. After the GP9's initial demonstration and introduction, the model became ordered by many railroads almost instantly; despite said railroads already owning preceeding GP7 units.

EMD designed the GP9 as an improved version of the GP7, with an increase in power from 1,500 hp to 1,750 hp, and a change in prime mover to the latest version of the 567 engine, the 567C. Externally, the GP9 strongly resembled its predecessor.

Sep 2, 2017 · This locomotive is a bit of a conundrum in that its motor is in fact lower rated than a normal GP9, the "M" designation actually referring to how it was constructed using parts of one or more EMD locomotives that were scrapped but had compatible parts. All that is known is that its engine is in fact a salvaged GP7 prime mover.

The last road to merge with C&NW, the Chicago Great Western, had purchased just two GP7s, CGW 120 and 121, in September 1951. Number 120 was involved in a wreck in 1955 and was rebuilt in January 1956 by EMD into a GP9M, using major components from the trade-in, wrecked GP7, retaining the GP7's 1,500 horsepower.

Apr 5, 2024 · As others have said, this is a GP9m, where the "modified" part generally means the nose was cut down from being as tall as the long hood down to where it is now to improve visibility. GP7s and GP9s had tall short hoods, as they were called, to house space for things like the toilet or the steam generator as GPs used in commuter service in the ...

Jun 17, 2011 · An EMD GP9 is a four-axle diesel locomotive built by General Motors' Electro-Motive Division in the United States, and General Motors Diesel in Canada between January, 1954, and August, 1963. US production ended in December, 1959, while an additional thirteen units were built in Canada, including the last two in August, 1963.