The Chevrolet Silverado 2500 HD IV, specifically the Crew Cab Long Bed configuration with the 6.6-liter V8 engine producing 401 horsepower, represents the fourth generation of Chevrolet’s heavy-duty full-size pickup truck. Introduced with the 2024 model year as a facelift of the T1XX platform, this variant caters to buyers needing substantial towing and hauling capacity combined with a comfortable, spacious cabin. It occupies a mid-to-upper position within the Silverado 2500 HD lineup, offering a balance between capability and refinement, positioned above the base work truck trims and below the fully-loaded High Country models.
Technical Specifications
| Brand | Chevrolet |
| Model | Silverado 2500 HD |
| Generation | Silverado 2500 HD IV (T1XX, facelift 2024) Crew Cab Long Bed |
| Type (Engine) | 6.6 V8 (401 Hp) Automatic |
| Start of production | 2023 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 5 |
| Doors | 4 |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 7.6 kg/Hp, 131.2 Hp/tonne |
| Weight-to-torque ratio | 4.9 kg/Nm, 205.8 Nm/tonne |
| Power | 401 Hp @ 5200 rpm |
| Torque | 629 Nm @ 4000 rpm, 463.93 lb.-ft. @ 4000 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | L8T |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 103.25 mm (4.06 in) |
| Piston Stroke | 98 mm (3.86 in) |
| Compression ratio | 10.8:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Direct injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | OHV |
| Engine oil capacity | 7.6 l (8.03 US qt | 6.69 UK qt) |
| Coolant | 14.6 l (15.43 US qt | 12.85 UK qt) |
| Kerb Weight | 3056 kg (6737.33 lbs) |
| Max. weight | 4672 kg (10300 lbs) |
| Max load | 1616 kg (3562.67 lbs) |
| Fuel tank capacity | 136 l (35.93 US gal | 29.92 UK gal) |
| Permitted trailer load with brakes (12%) | 7257 kg (15998.95 lbs) |
| Length | 6759 mm (266.1 in) |
| Width including mirrors | 2079 mm (81.85 in) |
| Height | 2023 mm (79.65 in) |
| Wheelbase | 4369 mm (172.01 in) |
| Front track | 1731 mm (68.15 in) |
| Rear (Back) track | 1736 mm (68.35 in) |
| Ride height (ground clearance) | 256 mm (10.08 in) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 10 gears, automatic transmission Allison |
| Front suspension | Independent torsion bar, double wishbone |
| Rear suspension | Rigid axle suspension, Leaf spring |
| Front brakes | Ventilated discs, 355×40 mm |
| Rear brakes | Ventilated discs, 360×34 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Cone worm with recirculation balls |
| Power steering | Hydraulic Steering |
| Tires size | 245/75 R17; 265/70 R17; 275/70 R18; 275/65 R20 |
| Wheel rims size | 7.5J x 17; 8J x 18; 8.5J x 20 |
Powertrain & Engine Architecture
At the heart of this Silverado 2500 HD variant lies the Chevrolet L8T 6.6-liter naturally aspirated V8 engine. This engine is a staple of Chevrolet’s heavy-duty truck lineup, known for its robust construction and ample low-end torque. The L8T utilizes direct fuel injection, enhancing efficiency and power delivery. The overhead valve (OHV) valvetrain, while a traditional design, contributes to the engine’s durability and relatively simple maintenance requirements. The engine produces 401 horsepower at 5200 rpm and 629 Nm (463.93 lb-ft) of torque at 4000 rpm. This power is channeled through a heavy-duty 10-speed Allison automatic transmission, specifically tuned for towing and hauling. The Allison transmission provides smooth shifts and helps optimize the engine’s powerband for demanding tasks.
Driving Characteristics
The 6.6L V8 and 10-speed automatic combination delivers a driving experience focused on capability rather than outright speed. Acceleration is adequate for everyday driving, but the truck truly shines when put to work. The Allison transmission’s gear ratios are optimized for towing, providing strong pulling power from a standstill and maintaining momentum on inclines. Compared to lighter-duty Silverado 1500 models, the 2500 HD exhibits a more substantial feel, with a firmer ride due to its heavier-duty suspension. While not as fuel-efficient as smaller engine options, the 6.6L V8 provides a confident and capable driving experience, particularly when loaded or towing. The automatic transmission eliminates the need for constant shifting, making it a more convenient option for drivers who frequently operate in stop-and-go traffic or on long highway journeys.
Equipment & Trim Levels
The Crew Cab Long Bed 6.6L V8 Silverado 2500 HD typically comes standard with a comprehensive suite of features. These include air conditioning, power windows and locks, a touchscreen infotainment system with Apple CarPlay and Android Auto compatibility, and a rearview camera. The Crew Cab configuration offers a spacious interior with ample legroom for passengers. Upholstery is typically cloth or vinyl, with leather options available on higher trim levels. Optional extras include a premium audio system, navigation, heated and ventilated front seats, a power sunroof, and advanced safety features such as blind-spot monitoring and rear cross-traffic alert. The Long Bed provides a generous cargo area, making it ideal for hauling large items.
Chassis & Braking
The Silverado 2500 HD utilizes a fully boxed frame for enhanced rigidity and durability. The front suspension features an independent torsion bar setup with double wishbones, providing a comfortable ride and stable handling. The rear suspension employs a traditional leaf spring design, optimized for load-carrying capacity. Braking duties are handled by ventilated disc brakes on all four wheels, with the front discs measuring 355×40 mm and the rear discs measuring 360×34 mm. An Anti-lock Braking System (ABS) is standard. The steering system is a cone worm with recirculation balls, providing a direct and responsive feel. The truck’s substantial weight necessitates a robust braking system to ensure safe and controlled stopping power, especially when towing.
Market Reception & Comparison
The Silverado 2500 HD with the 6.6L V8 and automatic transmission has generally received positive reviews for its towing capacity, comfortable ride, and user-friendly technology. Critics have praised the Allison transmission for its smooth shifting and durability. Compared to diesel-powered Silverado 2500 HD models, the gasoline V8 offers a lower initial cost but typically delivers lower fuel economy and torque. However, the gasoline engine is often preferred by buyers who do not require the extreme towing capacity of the diesel and appreciate the simpler maintenance requirements. Against competitors like the Ford Super Duty and Ram Heavy Duty, the Silverado 2500 HD offers a competitive combination of features, capability, and value.
Legacy
The L8T 6.6L V8 engine and Allison 10-speed automatic transmission have proven to be a reliable and durable powertrain combination. While long-term reliability data is still emerging for the 2024 facelift, previous generations of this engine have demonstrated a strong track record. In the used car market, Silverado 2500 HD models equipped with this powertrain are generally well-regarded for their capability and dependability. Regular maintenance, including oil changes and transmission fluid flushes, is crucial for ensuring the longevity of this powertrain. The Silverado 2500 HD continues to be a popular choice for buyers who need a heavy-duty truck capable of handling demanding tasks, and the 6.6L V8 automatic variant remains a compelling option for those seeking a balance of power, convenience, and affordability.
