309, 504, 377, & 510 at Gray on the 13th of November, 2005. Video by John Erickson.
MEC 504 and the Rail Train on November 27th of 2010. 13 minutes. Video by John Erickson.
MEC 381, B&M 340, & MEC 504 take PORU through Blake on May 15th of 2013. Video by John Erickson.
MEC 381, B&M 340, & MEC 504 power PORU through Deering Jct. on May 15th of 2013. Video by John Erickson.
MEC 350, 511, & 504 with PORU at Leeds Junction on June 4th of 2020. Video by John Erickson.
MEC engines 518, 504, & 321 with RUPO at Curtis Corner in Leeds on October 31st of 2020. Video by John Erickson.
PanAm MEC engines 509, 504, 321, & 326 bring PORU across Mill Rd in North Yarmouth on November 7th of 2020. Video by John Erickson.
MEC 504 takes L077 up the Mountain Branch at Mountain Junction on March 31st of 2023. Video by 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.