Road Test: Overbilt F-650 Extended Crew Cab
| Overbilt F-650 Extended Crew Cab | | General | | Location of final assembly | Lebec, California | | Body style | Six-door truck | | EPA size class | Class 6 medium duty | | Drivetrain layout | Front engine, RWD | | Airbags | None | | Powertrain | | Engine type | Turbodiesel I-6, iron block/head | | Bore x stroke, in | 4.33 x 5.00 | | Displacement, ci/L | 442/7.2 | | Compression ratio | 16.5:1 | | Valve gear | OHV, 3 valves/cyl | | SAE horsepower, hp @ rpm | 300 @ 2400 | | SAE torque, lb-ft @ rpm | 800 @ 1440 | | Transmission type | Allison MD-3066 6-speed auto | | 1st | 3.49:1 | | 2nd | 1.66:1 | | 3rd | 1.41:1 | | 4th | 1.00:1 | | 5th | 0.75:1 | | 6th | 0.65:1 | | Reverse | 5.03:1 | | Axle ratio | 4.88:1 | | Recommended fuel | Diesel #2 | | Dimensions/Capacities | | Wheelbase, in | 194.0 (from factory) | | Length, in | 281.0 | | Width, in | 97.0 | | Height, in | 88.3 | | Headroom, f/r, in | 41.5/41.0 | | Legroom, f/r, in | 41.2/42.8 | | Shoulder room, f/r, in | 68.0/66.9 | | Hip room, f/r, in | 67.4/67.3 | | Ground clearance, in | 10.0 (at front axle) | | Base curb weight, lb | 9000 (est) | | Payload capacity, lb | 30,000 (est) | | GVWR, lb | 25,999 (est) | | GCWR, lb | 70,000 (est) | | Towing capacity, lb | 18,500 | | Fuel capacity, gal | 100.0 (dual 50-gal tanks) | | Chassis | | Suspension, f/r | Beam axle, leaf springs/live axle, air suspension | | Steering type | Power recirculating ball | | Brakes, f/r | Hydraulic disc/hydraulic disc, ABS | | Wheels | 22.5 x 8.5 Alcoa | | Tires | Goodyear 10R22.5 | | Performance | | Acceleration, sec 0-60 | 21.3 1/4 mile, sec @ mph 21.9 @ 60.5 | | Braking, 60-0, ft | 170 | | Fuel economy, city/hwy | 9/12 (est) | | Price | | Crew-cab model | $82,000-$85,000 (est) | | Six-door model | (as tested) $115,000 (est) | | Four-wheel-drive option | $10,000 (est) |
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