EMD SD40T-2
EMD SD40T-2|
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An SD40T-2 is a 6-axle diesel-electric locomotive built by General Motors Electro-Motive Division having a 16-cylinder EMD 645E3 diesel engine producing 3,000 horsepower (2,240 kW). 312 SD40T-2s were built for North American railroads between April 1974 and July 1980. This locomotive and the SD45T-2 are popularly called tunnel motors, but EMD's term is SD40-2s with "cooling system modifications" because they were designed for better engine cooling in tunnels. The difference between this locomotive and its non-tunnel motor cousin, the SD40-2, are the radiator intakes and radiator fan grills located at the rear of the locomotive. The radiator air intakes in this model were along the deck to allow more fresh, cooler air to enter and less hot exhaust fumes lingering around the tunnel's ceiling.
EMD SD45T-2 vs SD40T-2 radiator fan motor access doors
This locomotive model was purchased by the Denver and Rio Grande Western Railroad, the Southern Pacific Railroad, and its subsidiary Cotton Belt. Southern Pacific's version has a 4,400-US-gallon (16,700 L; 3,660 imp gal) fuel tank and is 70 feet 8 inches (21.54 m) long. Rio Grande's version has a smaller 4,000-US-gallon (15,100 l; 3,330 imp gal) fuel tank. After merging with Rio Grande, the Southern Pacific and later Union Pacific owned every SD40T-2.
In 2005, most of these units were owned by Union Pacific or leasing companies. By 2008, none were left in service on UP with SP or DRGW reporting marks. DRGW 5371 was the last one, retired in March 2008, and now resides at the Utah State Railroad Museum in Ogden Utah. Another SD40T-2 is preserved at the Boone & Scenic Valley Railroad in Boone, Iowa. UP still runs a few units repainted in its own livery.
Original purchasers
Other owners
| Railroad |
Quantity |
Road numbers |
Notes |
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| Alabama & Tennessee River |
3 |
2832, 2842, & 5387 |
2832 & 2842 still in UP yellow. 5387 still in "Bloody nose" paint lost speed lettering as of 5-10-11 |
| America Latina Logistica |
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| Fort Worth and Western Railroad |
3 |
2015-2017, 3252 |
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| Buffalo & Pittsburgh |
2 |
3301 & 3302 |
Both still in KCS Grey |
| Ferrovia Centro Atlântico (Brazil) |
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Rebuilt as 1,000 mm (3 ft 3 3⁄8 in) metre gauge BB40T-2s |
| GECX |
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| HLMX |
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| Indiana & Ohio |
3 |
IORY 4070, 4071, and 4072 |
All wear RailAmerica red and gray |
| Kansas City Southern |
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Rebuilt as SD40-3s |
| LTEX |
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| MNA (Missouri & Northern Arkansas Railroad) |
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| NREX |
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| New York Susquahanna & Western |
4 |
3010, 3014,
(3012 and 3016 have been rebuilt into SD33ECO's) |
All units wear Susquehanna "Yellow Jacket" paint. 3014 has "snoot" nose, all others have 88 in (2.24 m) noses. |
| OHCR |
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| Respondek Rail Corporation (Squaw Creek Southern Railroad) |
1 |
8795 |
Sold to WE |
Former UP 8795 & SP 8246 |
| R.J. Corman |
9 |
5353, 5361, 5372, 5409, 8307, 8336, 8569, 8718, 8861 |
| Terminal Railroad Association (TRRA) |
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3001,3005 |
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| Union Pacific |
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Most if not all Retired by now |
| Wheeling & Lake Erie |
2 |
5391, 5413, 8795 |
WE 5391 and 5413 are still in D&RGW paint, WE 8795 wears UP colors, Ex-Squaw Creek |
| Independent Locomotive Service (ILSX) |
1 |
1343 |
Former UP 2906, UP 4429, & SP 8371 |
External links
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| Six-axle road power | |
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| Eight-axle road power | |
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