The Chevrolet Silverado 3500 HD IV, specifically the 2024 model year facelift featuring a Regular Cab Long Bed configuration with the 6.6-liter V8 engine producing 401 horsepower and paired with a 4WD Dual Rear Wheel (DRW) automatic transmission, represents Chevrolet’s heavy-duty truck offering aimed at demanding work applications. Introduced as part of the T1XX platform generation, the 2024 update brought styling revisions and technology enhancements to an already capable platform. This particular variant occupies a position within the Silverado 3500 HD lineup geared towards buyers prioritizing substantial towing and payload capacity, while still desiring the convenience of an automatic transmission and four-wheel drive.
Technical Specifications
| Brand | Chevrolet |
| Model | Silverado 3500 HD |
| Generation | Silverado 3500 HD IV (T1XX, facelift 2024) Regular Cab Long Bed |
| Type (Engine) | 6.6 V8 (401 Hp) 4WD DRW Automatic |
| Start of production | 2024 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 2 |
| Doors | 2 |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 7.9 kg/Hp, 126 Hp/tonne |
| Weight-to-torque ratio | 5.1 kg/Nm, 197.7 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 | 3182 kg (7015.11 lbs) |
| Max. weight | 6350 kg (13999.35 lbs) |
| Max load | 3168 kg (6984.24 lbs) |
| Fuel tank capacity | 136 l (35.93 US gal | 29.92 UK gal) |
| Permitted trailer load with brakes (12%) | 8380 kg (18474.74 lbs) |
| Length | 5982 mm (235.51 in) |
| Width including mirrors | 2457 mm (96.73 in) |
| Height | 2038 mm (80.24 in) |
| Wheelbase | 3595 mm (141.54 in) |
| Front track | 1731 mm (68.15 in) |
| Rear (Back) track | 1905 mm (75 in) |
| Ride height (ground clearance) | 266 mm (10.47 in) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels permanently, and the front wheels are driven through an electrically or mechanically operated clutch if necessary. |
| Drive wheel | All wheel drive (4×4) |
| 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, 355×40 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Cone worm with recirculation balls |
| Power steering | Hydraulic Steering |
| Tires size | 235/80 R17; 235/80 R18 |
| Wheel rims size | 6.5J x 17 |
Powertrain & Engine Architecture
At the heart of this Silverado 3500 HD variant lies the Chevrolet L8T 6.6-liter V8 gasoline engine. This engine is a naturally aspirated, overhead valve (OHV) design featuring direct fuel injection. The L8T produces 401 horsepower at 5200 rpm and 629 Nm (463.93 lb-ft) of torque at 4000 rpm. The engine’s robust construction and large displacement are geared towards providing substantial low-end torque, crucial for heavy towing and hauling. The engine utilizes a 10.8:1 compression ratio. The engine is mated to a heavy-duty 10-speed Allison automatic transmission, specifically designed to handle the high torque output and demanding conditions associated with heavy-duty truck applications. This transmission features electronically controlled shifts and is optimized for both towing and everyday driving.
Driving Characteristics
The combination of the 401 hp V8 and the 10-speed Allison automatic delivers a driving experience focused on capability rather than outright speed. The truck’s substantial weight (3182 kg / 7015.11 lbs) and focus on work-oriented tasks mean acceleration is brisk but not sporty. The Allison transmission is programmed to prioritize smooth shifts and maintain engine power within the optimal torque band, especially when towing. The 4WD system provides enhanced traction in challenging conditions, making it suitable for both on-road and off-road use. Compared to the diesel-powered Silverado 3500 HD models, this gasoline variant offers a quieter and smoother ride, but sacrifices some of the diesel’s exceptional low-end torque and fuel efficiency.
Equipment & Trim Levels
The 2024 Silverado 3500 HD IV Regular Cab Long Bed 6.6 V8 4WD DRW Automatic, while a work-focused trim, typically includes standard features such as air conditioning, a basic infotainment system with a touchscreen display, and vinyl upholstery. The Regular Cab configuration prioritizes functionality over luxury, offering a no-frills interior designed for durability. Optional extras could include upgraded infotainment systems with navigation, premium cloth or leather upholstery, power-adjustable seats, and various driver-assistance features. The DRW (Dual Rear Wheel) configuration is a key feature of this variant, significantly increasing stability and payload capacity.
Chassis & Braking
The Silverado 3500 HD utilizes a robust chassis designed to withstand heavy loads and demanding conditions. The front suspension features an independent torsion bar and double wishbone setup, while the rear suspension employs a traditional rigid axle with leaf springs. This configuration provides a balance of ride comfort and load-carrying capacity. Braking duties are handled by ventilated disc brakes on all four wheels, measuring 355×40 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 curb weight and heavy-duty components contribute to its overall stability and braking performance.
Market Reception & Comparison
The 2024 Silverado 3500 HD with the 6.6L V8 and automatic transmission received generally positive reviews for its capability and refinement. Critics noted the engine’s ample power and the smooth operation of the Allison transmission. However, fuel economy was a common concern, as gasoline engines typically consume more fuel than their diesel counterparts. Compared to the Duramax diesel engine option, this gasoline variant offered a lower initial purchase price but higher long-term operating costs due to fuel consumption. The gasoline engine was often favored by buyers who did not require the extreme towing capacity of the diesel models and preferred a quieter, smoother driving experience.
Legacy
The L8T 6.6L V8 and Allison 10-speed automatic combination has proven to be a relatively reliable powertrain in the Silverado 3500 HD. While not as renowned for longevity as the Duramax diesel, the gasoline engine has demonstrated acceptable durability with proper maintenance. In the used car market, these trucks are sought after by buyers who need a capable heavy-duty truck without the higher cost and complexity of a diesel engine. Regular maintenance, including oil changes and transmission fluid services, is crucial for ensuring the long-term reliability of this powertrain. The DRW configuration adds to the vehicle’s desirability among those requiring maximum payload and towing capacity.
