The GP40 utilizes a turbocharged 16 cylinder engine to produce an extra 1000HP, which allows the unit to maintain tractive effort at higher speeds. GATX also carries -2 and -3 variations providing additional tractive effort and control system upgrades.
Tractive Effort @ Min. Cont. Speed
55,000 lbs. @ 11.3 mph
Length Over Coupler Pulling Faces
59 feet, 2 inches
Distance between Bolster Centers
Truck-Rigid Wheel Base
Width Over Grab Irons
10 feet, 2-1/2 inches
Height Above Rails
15 feet, 2-1/2 inches
1,700 to 3,600 gallons
16-645E3, 16 cylinder turbocharged, GM Diesel
Four D77/78 direct current
62:15 gear ratio
Total loaded weight on rails average 257,000 lbs.