2026 Ram 3500-4500-5500 Chassis Cab 4500/5500 Big Horn
The 2026 Ram 3500-4500-5500 Chassis Cab 4500/5500 Big Horn is a 375-hp 6.4-liter with an 8-speed automatic and four-wheel drive.
| Spec | Value |
|---|---|
| Engine | |
| Engine Type | 6.4L HEMI V-8, OHV 16V, pushrod |
| Displacement | 6.4 L |
| Horsepower | 375 hp @ 5,600 rpm |
| Torque | 429 lb-ft @ 4000 rpm |
| Redline | 5,800 rpm |
| Bore and Stroke | 103.9 x 94.6 |
| Compression Ratio | 10.0:1 |
| Injection Type | Sequential Multi-Port Injection (MPI) |
| Drivetrain | |
| Drive Type | 4x2 / 4x4 |
| Transmission | |
| Transmission | 8-speed automatic (ZF 8HP75 / 8AP430) |
| 1st Gear | 4.89 (25 mph **) |
| 2nd Gear | 3.12 (39 mph **) |
| 3rd Gear | 2.03 (60 mph **) |
| 4th Gear | 1.64 (74 mph **) |
| 5th Gear | 1.27 (96 mph **) |
| 6th Gear | 1 (122 mph **) |
| 7th Gear | 0.84 (145 mph **) |
| 8th Gear | 0.67 (182 mph **) |
| Reverse | 3.3 |
| Final Drive | 4.44 |
| Fuel Economy | |
| Recommended Fuel | Regular unleaded |
| Tank Capacity | 52 gal |
| Suspension | |
| Front Suspension | Five-link solid front axle, coil springs, stabilizer bar |
| Rear Suspension | Two-stage longitudinal multi-leaf springs, solid axle |
| Brakes | |
| Front Brake Disc | 15.35" (390 mm) twin-piston, hydro-boost |
| Rear Brake Disc | 15.35" (390 mm) twin-piston, hydro-boost |
| Tires & Wheels | |
| Wheels Front | 19.5" |
| Wheels Rear | 19.5" |
| Tires Front | 225/70R19.5 |
| Tires Rear | 225/70R19.5 |
| Dimensions & Weight | |
| Length | 236.3 in |
| Width | 93.2 in |
| Height | 81.7 in |
| Wheelbase | 144.6 in |
| Front Track | 77.1 in |
| Rear Track | 73.6 in |
| Ground Clearance | 13.7 in |
| Interior | |
| Headroom Front | 39.8 in |
| Legroom Front | 40.9 in |
| Shoulder Room Front | 65.9 in |
| Hip Room Front | 62.9 in |
** Theoretical max speed per gear at redline