| Name | Net Power - Tractor/Scraper | Heaped Capacity | 180° Curb-to-Curb Turning Width |
|---|---|---|---|
| 637E Series II Coal | 365 kW (490 hp)/186 kW (250 hp) | 50 yd3 | |
| 637G Coal | 373 kw (500 hp) / 211 kW (283 hp) | 50 yd3 | 44.95 ft |
| 657E Coal | 451 kW (605 hp) / 328 kW (440 hp) | 73 yd3 | |
| 657G Coal | 447 kW (600 hp) / 337 kW (451 hp) | 73 yd3 | 51.18 ft |