Trucks: B-B Flexicoil
Engine: 12-567C
Gear ratio: 62:15
Maximum speed: 65 mph
Operating weight: 246,000 lbs.
Tractive effort: 40,000 lbs.
Length: 44′ – 5″
Equipped for hump service with boosters Nos. 701 and 701
| Road no. | Class | Previous road no. | Retired | Notes / disposition |
| 425 | GY-12d | 1220 | Sep 12 80 | |
| 426 | GY-12d | 1221 | Sep 12 80 |