EMD SD40 and SD40A

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Data Sheet Information Compiled by: JEAN-DENIS BACHAND
New: 1 September 2006  Artwork by: Jean-Denis Bachand
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Engine Builder: EMD Engine: 645E3 16 cylinder
Bore & Stroke 8.5" X 10"
RPM (Maximum / Minimum) 900 / 315
Main Generator: GM - AR10 Horsepower: 3000
Gear Ratio: 62:15 Speed: 65 mph
Trucks: HT-C 6-Wheel Configuration: C-C
Traction Motor Blowers: Electrical Drive (2) Model: GM
Weight: 368,000 lbs Traction Motors: Six GM - D77
Tractive Effort (starting) 92,000 lbs @25% Tractive Effort (continuous): 82,100 lbs @ 11 mph
Multiple Unit Capability: Yes Dynamic Braking: Yes
Auxilary Generator: Delco A8102 Alternator: Delco 14
Air Brake: Westinghouse Model: 26L
Compressor: Gardner-Denver Model: WBO
Quantity Built: 1257 (plus 18 SD40As) Dates: 1/66 to 7/72 (and 8/69 to 1/70 for SD40A)
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Exterior Dimensions SD40
Total Length 65'-08" (and 70'-08")
Wheel Diameter 40"
Truck Wheel Base 13'-07"
Height to Top Engine Hood 14'-08"
Height to Top Cab 15'-07.5"
Cab Width 10'-03"
Top of Walkway 8'-09.5"
Walkway Width 3'-08.5"
Engine Hood Width 10'-00"
Center Bolster 43'-06" (and 45'-00")
Center Front Truck to Front Pilot 3'-10"
Center Rear Truck to Rear Pilot 3'-10"
Distance between Truck Centers 53'-07" (and 58'-07")
Minimum Turning Radious 57 degrees
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Fuel Oil: 4000 Lubricating Oil: 395
Engine Cooling Water: 254 Sand Capacity: 56 cu. ft.
Options: -
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Somebody's Large Digital Image Here
Artwork by: JEAN-DENIS BACHAND
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Reference Sources:
  • Diesel Locomtoives, Vol.2, by Bob Hayden
  • Illustrated Treasury of GM Locomotives, by James W. Kerr
  • Diesel Locomotives, The First 50 Years by Louis A. Marre
  • The Second Diesel Spotter's Guide, by Jerry A. Pinkepank
  • "Early Diesel and Electric Locomotives," Rail Heritage Publications
  • Diesel & Electric Locomotive Specificiations, 1981 by F.K. Hudson
  • Train Shed Cyclopedia, Vol. 20, 58, 60, 64, 80

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