How much horsepower and torque does a Chevy Silverado 3500 have?
The Silverado 3500HD offers two engine options, with distinct horsepower and torque figures: a 6.6-liter gas V8 delivering 401 horsepower and 464 lb-ft of torque, and a 6.6-liter Duramax turbo-diesel delivering 445 horsepower and 910 lb-ft of torque.
The numbers you see for the Silverado 3500HD depend on which engine you choose and the model year. Gas and diesel variants are tuned for different responsibilities, from daily driving and mid-range payloads to heavy hauling and towing. The figures above reflect the current generation and standard configurations, using SAE net ratings rather than gross numbers.
Engine options and specs
For readers comparing performance, here are the two primary engine options currently offered in the Silverado 3500HD and their peak outputs:
- 6.6L V8 gas engine (L8T): 401 horsepower and 464 lb-ft of torque.
- 6.6L Duramax turbo-diesel V8 (L5D): 445 horsepower and 910 lb-ft of torque.
Note: Output figures are SAE net horsepower and torque. Actual performance can vary with cab/bed configuration, drivetrain setup (2WD vs 4WD), and any aftermarket modifications. Towing and payload specifications will also be influenced by these factors and the transmission gearing.
Performance implications
Diesel torque and towing capability
The diesel option is defined by its high torque peak, which arrives at relatively low engine speeds. That translates to better towing ability, improved launch feel when pulling heavy trailers, and strong hill-start performance. The diesel’s 910 lb-ft of torque is a key advantage for anyone prioritizing heavy payloads or long-haul towing compared with the gasoline option.
Gasoline power and daily usability
The gasoline engine offers solid power for everyday driving, highway merging, and moderate payloads. While it trails the diesel in torque, it delivers quicker response and strong top-end horsepower that can feel more energetic in light to mid-duty tasks.
Summary
In the current Silverado 3500HD lineup, the two primary engine options yield: 401 hp and 464 lb-ft of torque for the gas V8, and 445 hp and 910 lb-ft of torque for the Duramax turbo-diesel. The diesel is best suited for heavy towing and high-payload demands, while the gas engine provides robust daily-use performance with adequate capability for many hauling tasks. Always check the exact figures for your model year and configuration, as options can shift slightly with updates.
