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By John Erickson

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MEC 504 Pictures from John Erickson

Engine Details
Number Marks Current Disposition Eng. Serial No. Eng. Built: Date Acquired:
504 MEC Active A3044 4-7/1974 1990s
Eng. Type: Engine Maker: Trucks: Horsepower: Weight: Engine:
GP40-2 EMD HTB 4-Wheel 3000 250,000 lbs 645E3C 16 cylinder
Bore & Stroke: Fuel Capacity: Truck Wheel Base: Tractive Effort (starting): Gear Ratio: Speed:
9.08" X 10" 1700 9'-00" 61,000 lbs @25% 62:15 65 mph


All diesel engine data is usually from The Diesel Shop with inclusions from Wikipedia where the information on The Diesel Shop was spotty. Former Maine Central Locomotives are checked against Maine Central Diesel Locomotives Revised Edition by Edwin B. Robertson.