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ELECTRO MOTIVE DIVISION GP40-2 DIESEL LOCOMOTIVE


Built by General Motors Diesel/Electro-Motive Division, the EMD GP40-2 (Dash-2) is a four-axle road switcher diesel-electric locomotive evolution of GP40 series. These were powerful turbocharged locomotives, using a 16-cylinder 645E3 prime mover to produce 3,000hp. Since they were based on the improvements of the Dash-2 line, they were also extremely reliable compared to their GP40 cousins. Over 1.200 units were built: 903 of the original domestic model, 233 of the wide-cab (Canadian-built) GP40-2L, among many rebuilds; such as the MK Rail GP40-2WH. The major users of GP40-2 road-switcher were Baltimore & Ohio/Chessie System (with a total of 218 engines) and Conrail (129 units delivered from 1976 to 1980).
Externally, the GP40-2 was virtually unchanged during the transition to the "Dash 2" line, except for the small, oblong-shaped water-level sight glass window located on the right-side of the long-hood. towards the front of the radiator intake. Overall, the difference between a late-GP40 unit and an early GP40-2 unit are barely perceptible. On the inside, however, is an entirely different story. First and foremost, the most prominent change was with the wiring (akin to the rest of the series). Transistors, printed electrical circuit boards, and a control system featuring solid-state modular components were the hallmark of the radically redesigned "Dash 2" electrical system. The elaborate maze of hardwired circuitry, ponderous relays, interlocks, and bulky switches that defined the electrical systems of earlier locomotives were gone for good. Early to mid-production Phase-2 production lot of GP40-2s were built from mid-1976 through late-1979. Several major spotting features of Phase 2 units include: an 88” low nose (total lenght of locomotive increased to over 18,00 meters), corrugated radiator grilles and notched step wells. The late variants from 1980 to 1986 introduced a new interior cab design and further improved some electrical components.

Specifications / Technical data
Builder: Electro Motive Division
Wheels: B-B
Gauge: 4 ft 8,5 in
Loco weight: 250.000 lb
Lenght: 17,95 meters
Engine power: Diesel
Prime mover: EMD 545E3C
Horsepower: 3.000 Hp (some Phase II-B units improved at 3.200 Hp)
Speed: 65 mph
Build date: 1972-1986
Units built: 1.213
Units in CR roster: 128



EMD GP40-2 Conrail #3277 data
Road Number: 3277
Type: B-B diesel locomotive
Builder: EMD
Built: 1973
CN: 73624-3
Disposition: to CSX 4401 from 1999, September
Previous owner: Reading
Remarks: ex RDG-3673
Assignment: =

When they entered service in the early days of Conrail, the GP40-2 were the most modern diesel locomotives on duty. Conrail inherited its first GP40-2 locos from Reading. These five unitss (ex-RDG 3671-3675) only carried 2.600 gallons of fuel and were not equipped with the self-loading feature associated with trouble shooting operations. Based on the improved electronics of the Dash-2 series, the GP40-2 was a reliable locomotive designed primarily for high-speed intermodal service, though they also found themselves in regular merchandise service. Since all the units were equipped with cab signals, they could be found nearly everywhere on Conrail's system, though at first they tended to appear more regularly in the Eastern section of the system. With its basic Reading green paint, number #3277 operates on ex-Reading and ex-Lehigh Valley lines until the end of 1981, when it received the CR's blue livery.


EMD GP40-2 Phase-1 Conrail (ex-Reading livery patched) #3277 in 1978.


EMD GP40-2 Phase-1B Conrail #3297 in blue livery during 1977.


EMD GP40-2 Phase-1 Conrail (ex-Reading livery patched) #3277 in 1978.


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