| Make | Challenger |
|---|---|
| Model | 670 (2003-2011) |
| ENGINE† | |
| Horsepower, Rated - hp (kW) | 350 (261) |
| Horsepower, Maximum - hp (kW) | 370 (276) |
| Power Boost - hp (kW) | 21 (15) |
| Engine Make | Caterpillar |
| Engine Model | C9 ACERT |
| Number of Cylinders | 6 |
| Piston Displacement - cu in (L) | 537 (8.8) |
| Emission Tier Level | Tier 3 |
| Fuel Tank Capacity - gal (L) | 160 (606) |
| Diesel Exhaust Fluid (DEF) Tank Capacity, gal (L) | No DEF |
| FEEDING SYSTEM† | |
| Feeder Width - in (mm) | 55.4 (1407) |
| Feeder Speed Variable | Standard |
| Feeder Reverser Control | Electro-Hydraulic |
| Feeder Tilt Adjustment | Optional |
| Stone / Rock Protection | Stone Trap |
| THRESHING & SEPARATING SYSTEM† | |
| Threshing System Type, Rotary or Conventional Cylinder | Rotary |
| Number of Rotors or Cylinders | 1 Rotor |
| Rotor or Cylinder Description | Rasp Bars |
| Rotor or Cylinder Diameter - in (mm) | 27.5 (698.5) |
| Rotor or Cylinder Length - in (mm) | 140 (3556) |
| Rotor or Cylinder Speed Range - rpm | 175 - 970 |
| Threshing Area Wrap - degrees | 180 |
| Concave Adjustment | Hydrostatic |
| CLEANING SYSTEM | |
| Total Sieve Area - sq in (sq m) | 8,296 (5.35) |
| Leveling System Available | No |
| Cleaning Fan Description | Transverse Cleaning Fan |
| Cleaning Fan Speed Range - rpm | 590 - 1350 |
| GRAIN HANDLING SYSTEM | |
| Grain Tank Capacity, Standard - bu (L) | 300 (10572) |
| Optional Grain Tank Capacity - bu (L) | No optional tank |
| Unloading Rate - bu/sec. (L/Sec) | 2.5 (88) |
| Unloading Auger Length, Standard - ft-in (m) | 23' 9" (7.24) |
| Optional Auger Length - ft-in (m) | No optional auger |
| Reach from Machine Center, Standard Auger - ft-in (m) | np |
| Reach from Machine Center, Optional Auger - ft-in (m) | No optional auger |
| TIRES and TRACKS | |
| Reference Drive Tire Size | 30.5L x 32 |
| Steering Tire Size | 16.9x24 |
| Rubber Tracks Available | No |
| WEIGHTS and DIMENSIONS, without Header | |
| Weight, 2WD - lb (kg) | 29,597 (13425) |
| Wheelbase, 2WD - in (mm) | 146 (3708) |
| Transport Height - ft-in (m) | 12' 0" (3.66) |