| EMD SDP45 |
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| Specifications |
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Configuration:
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| • AAR | C-C |
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| Gauge | 4 ft 8+1⁄2 in (1,435 mm) standard gauge |
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| Wheel diameter | 40 in (1,000 mm) |
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| Minimum curve | 57° |
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| Wheelbase | 13 ft 7 in (4,140 mm) |
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| • Truck | 6-Wheel |
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| Pivot centres | 58 ft 7 in (17,860 mm) |
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| Length | 70 ft 8 in (21,540 mm) |
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| Width | 10 ft 4 in (3,150 mm) |
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| Height | 15 ft 7.5 in (4,762 mm) |
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| Loco weight | 396,000 lb (180,000 kg) |
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| Fuel type | Diesel |
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| Fuel capacity | 3,200 US gal (12,000 L; 2,700 imp gal) |
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| Lubricant cap. | 294 US gal (1,110 L; 245 imp gal) |
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| Coolant cap. | 295 US gal (1,120 L; 246 imp gal) |
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| Sandbox cap. | 56 ft3 (1.6 m3) |
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| Prime mover | EMD 20-645E3 |
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| RPM: | |
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| • RPM low idle | 215 |
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| • RPM idle | 315 |
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| • Maximum RPM | 900 |
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| Engine type | V20 diesel engine |
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| Aspiration | turbocharged |
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| Alternator | GMD14 |
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| Generator | Main: GM - AR10
Auxiliary: GM |
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| Traction motors | GM - D77 (6) |
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| Cylinders | 20 |
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| Cylinder size | 8.5 in (220 mm) × 10 in (250 mm) |
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| Transmission | Diesel-electric |
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| Gear ratio | 59:15 |
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| MU working | Yes |
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| Train heating | Vapor-Clarkson Steam Boiler AR4125 |
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| Loco brake | Independent air;
optional: Dynamic brakes |
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| Train brakes | Westinghouse 26L (Air Brake) |
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The SDP45 is a six-axle, C-C, 3,600-horsepower (2,680 kW) diesel-electric locomotive built by General Motors' Electro-Motive Division of La Grange, Illinois. It was a passenger-hauling version of the SD45 on a stretched locomotive frame with an extended, squared-off long hood at the rear, aft of the radiators, giving space for a steam generator for passenger train heating. This steam generator placement followed the pattern set by the SDP35 and SDP40.