2023 Ram 3500 Big Horn/Lone Star 6.7L Diesel HO
The 2023 Ram 3500 Big Horn/Lone Star 6.7L Diesel HO is a 420-hp 6.7-liter turbocharged with a 6-speed automatic; three planetary gear sets, full electronic control, electronically controlled converter clutch; 4x4: bw 44-48 transfer case, 2wd/4hi/n/4lo, low range 2.64:1 and four-wheel drive.
| Spec | Value |
|---|---|
| Engine | |
| Engine Type | 6.7L Cummins High-Output Turbo Diesel I-6, OHV 24-valve, turbocharged, intercooled; CGI block, cast-iron head |
| Displacement | 6.7 L |
| Horsepower | 420 hp |
| Torque | 1075 lb-ft |
| Redline | 3,200 rpm |
| Valvetrain | OHV, 24-valve, pushrod, hydraulic lifters |
| Bore and Stroke | 107.0 x 124.0 |
| Compression Ratio | 16.2:1 |
| Injection Type | Electronic high-pressure common rail (HPCR) |
| Drivetrain | |
| Drive Type | 4x2 or 4x4 |
| Differential Type | AAM 9.25-in. beam front (4x4); AAM 11.5-in. beam rear (SRW) or AAM 12.0-in. beam rear (DRW/Max Tow) |
| Transmission | |
| Transmission | 6-speed automatic (Aisin AS69RC); three planetary gear sets, full electronic control, electronically controlled converter clutch; 4x4: BW 44-48 transfer case, 2WD/4HI/N/4LO, low range 2.64:1 |
| 1st Gear | 3.75 |
| 2nd Gear | 2 |
| 3rd Gear | 1.34 |
| 4th Gear | 1 |
| 5th Gear | 0.77 |
| 6th Gear | 0.63 |
| Reverse | 3.54 |
| Final Drive | 3.73 |
| Fuel Economy | |
| Recommended Fuel | Ultra-low sulfur diesel (ULSD) |
| Suspension | |
| Front Suspension | Three-link with track bar, coil springs, stabilizer bar, solid axle |
| Rear Suspension | Two-stage longitudinal leaf springs, solid axle (optional supplemental air bags) |
| Brakes | |
| Front Brake Calipers | Twin-piston pin-slider caliper, ABS; Hydro-boost power assist |
| Front Brake Disc | 14.17 x 1.54 in (359.9 x 39.1 mm) disc |
| Rear Brake Disc | 14.09 x 1.34 in (357.9 x 34.0 mm) disc |