| FB3800C | Specifications |
| Engine | Volvo D9E |
| Rated output at | 2,100 r/min (35 r/s) |
| ...ISO 9249/SAE J1349 net | 323 hp (241.6 kW) |
| Min. / Max. cutting radius (with 1,680 mm / 5’ 6” felling head*) | 15’ 7” (4,750 mm) / 30’ 4” (9,250 mm) |
| Swing torque | 85,000 ft-lb (115.2 kNm) |
| Max. hydraulic flow main pump | 239 gal/min (904.7 l/min) |
| …dedicated saw pump / accessory pump | 38 gal/min (143.8 l/min) / 30 gal/min (113.5 l/min) |
| Max. tractive effort | 100,000 lb (454 kN) |
| Travel speed low / high | 1.4 / 2.7 mph (2.2 / 4.0 km/h) |
| Operating weight (without attachment, depending on undercarriage version) | 75,000 - 75,700 lb (34.0 - 34.4 t) |