Understanding Silverado HD Engine Options: Duramax Diesel vs. Gas

When it comes to heavy-duty capability, the 2026 Chevrolet Silverado HD delivers with two powertrains built for serious work. Whether you need to haul equipment across San Bernardino or tow a loaded trailer on the highway, choosing the right engine makes all the difference. Read on for a full breakdown of each of these Chevy truck engine options, including the best gas engine for towing and the legendary Duramax® Turbo-Diesel V8.

Best Gas Engine For Towing & More In Fontana

The 6.6L V8 gas engine is the standard powertrain across the 2026 Chevrolet Silverado HD lineup, and it brings plenty of muscle to your Eastvale work site. Paired with a 10-speed automatic transmission, this engine balances raw power with refined drivability. Here is a closer look at the specs:

• 401 hp
• 464 lb-ft of torque
• 10-speed automatic transmission
• Standard RWD; available 4WD
• Up to 19,080 pounds of towing capacity (requires Silverado 3500 HD Regular Cab/Long Bed WT 2WD configuration)

With nearly 20,000 pounds of maximum towing capacity, the 6.6L V8 stands out as the best gas engine for towing in the heavy-duty segment. From boat launches to construction sites, you can count on this proven powertrain to get the job done without the added cost of diesel fuel and maintenance.

Silverado HD Diesel Engine Specs for Your Corona Drives

For those who demand maximum pulling power, the available 6.6L Duramax® Turbo-Diesel V8 engine takes the Silverado HD 2500 and 3500 HD to another level entirely. This engine is purpose-built for drivers who tow and haul day in and day out, delivering incredible torque right when you need it. Take a look at what this diesel powerhouse offers:

• 470 hp
• 975 lb-ft of torque
• 10-speed automatic transmission
• Standard RWD; available 4WD
• Up to 36,000 pounds of maximum towing capacity (requires Silverado 3500 HD Regular Cab/Long Bed WT 2WD DRW configuration)

With 975 lb-ft of torque and a maximum towing capacity of 36,000 pounds, the Duramax® diesel is in a class of its own. Whether you are hauling a fifth-wheel camper or pulling heavy equipment for work, this engine provides the confidence and capability that heavy-duty truck owners expect.

Which Engine Is Right For Ontario Roads?

Choosing between the gas and diesel Silverado HD comes down to how you plan to use your truck. The 6.6L V8 gas engine is an excellent choice for drivers who tow moderate loads and want lower upfront costs. The Duramax® Turbo-Diesel V8 is the go-to option for maximum towing and payload performance, especially for commercial and heavy-duty applications.

Test-Drive A Silverado HD 2500 In Riverside

Ready to experience the power of the 2026 Chevrolet Silverado HD 2500 or 3500 for yourself? Visit Riverside Chevrolet to explore our current inventory and get behind the wheel. Our team is here to help you find the right engine, trim, and configuration for your driving and work needs. Contact us today to schedule your test drive.