ALCO C643

Production Roster

 Action photo

Keith Ardinger photo
Info Supplied by: John Komanesky New: 29 September 2005
Original owner Road Numbers Bldr Numbers Bldr Dates
Southern Pacific 9018 3374-01 9/1964
Southern Pacific 9019 3374-02 9/1964
Southern Pacific 9020 3374-03 10/1964
-

Technical Data

Somebody's Large Digital Image Here
New: 12 April 2005 Data & Drawing by: JEAN-DENIS BACHAND
>Engine: Alco Two 4-cycle Model 251C V12 Horsepower: 4300
Bore & Stroke: 9" X 10.5" RPM (maximum / minimum): 1050 / 375
Trucks: Tri-mount Traction Motor Blowers: Voith (3)
Gear Ratio: 78:22 Speed: 77 mph
Weight: 378,000 lbs. Traction Motors: GE 752 (Six)
Multiple Unit Capability: Yes Dynamic Braking: Yes
Main Generator: Voith Hydraulic Auxilary Generator: GE 5GY27A
Air Brake: Westinghouse: 26L Compressor: Westinghouse: 3CDB
Quantity Built: (3 September 1964)
- -
Total Length: 75'10" Pilot to Pilot: 71'-06"
Truck Wheel Base: 13'-10" Wheel Diameter: 40"
Height to Top Engine Hood: 15'-05" Height to Top Cab Hood: 15'-00"
Cab Width: 10'-00" Engine Hood Width: 8'-00"
Center Bolster: 51'-00" Distance between Truck Centers: 59'-05"
Minimum Turning Radius 25 degrees
- -
Fuel Oil: 4000 Gallons Lubricating Oil: 400 Gallons
Engine Cooling Water: 600 Gallons Sand Capacity: 48 Cubic Feet
Equipment & Options:
  • Fuel Oil Heater
  • Speed Recorder
  • Oscillating Headlight
Reference Sources:
  • SP Mechanical Data Book
  • The Diesel Builders, Vol.2, by John F. Kirkland
  • Alco: A Centennial Remembrance, by Richard T. Steinbrenner


ALCO C855

Production Roster

 Action photo

xxxxxxx photo
Info Supplied by: John Komanesky New: 29 September 2005
Original owner Road Numbers Bldr Numbers Bldr Dates
Union Pacific 60 84730 6/1964
Union Pacific 61 84731 6/1964
Union Pacific 60-B 84732 6/1964
- -

Technical Data

 Somebody's Large Digital Image Here
Data & Drawing by: JEAN-DENIS BACHAND New: 8 April 2005
-
Engine: Two Alco 4-cycle Model 251C V12 Horsepower: 5500
Bore & Stroke: 9" X 10.5" RPM (Maximum / Minimum): 1050 / 750
Gear Ratio: 65:18 Speed: 75 mph
Four 4-Wheel (configuration B-B/B-B) Traction Motor Blowers: Mechanical Driven (4)
Weight: 551,000 lbs Traction Motors: GE 752 (eight)
Weight: 551,000 lbs Tractive Effort (continuous): 88,000 lbs @ 10 mph
Multiple Unit Capability: Yes Dynamic Braking: Yes
Main Generator: Two GE - GT598 Auxilary Generator: GE GY27-5
Air Brake: Westinghouse 26L Compressor: Westinghouse 3CDC
Quantity Built: Two C-855s and one C-855B (Dates: 6/1964)
- -
Total Length: 86'-00" / 86'-00" Pilot to Pilot: 76'-00" / 76'-00"
Truck Wheel Base: 23'-00" / 23'-00" Wheel Diameter
Height to Top Engine Hood: 16'-06" / 16'-01" Height to Top Cab Hood: 16'-01" / --
Cab Width: 10'-00" / -- Engine Hood Width: 10'-06" / 10'-06"
Center Bolster: 44'-00" / 44'-00" Distance between Truck Centers: 70'-07" /70'-07"
Minimum Turning Radious 30 degrees
- -
Fuel Oil: 4000 Lubricating Oil: 400
Engine Cooling Water: 320 Sand Capacity: 48 cu. ft.
Options: Dynamic Brakes
Somebody's Large Digital Image Here Drawing by: Jean-Denis Bachand
Reference Sources:
  • Alco: A Centennial Remembrance, by Richard T. Steinbrenner
  • Giants of the West, by George R. Cockle
  • The Diesel Builders, Vol.2 by John F. Kirkland

Back to Motive Power Rosters

Back to Alco Centuries