2025 Silverado 3500hd Specs. As was the case for the 2024 model year, the 2025 chevy silverado hd is offered with two different engines, starting with the naturally aspirated 6.6l v8 l8t gasoline engine, rated at 401. Learn from our experts about the 2025 chevrolet silverado 3500hd including reviews, prices, specs, ratings, colors, and more to make the best vehicle choice for you.

10) (wt, custom, lt, ltz, high country) horsepower/torque curve. 10) (wt, lt), model year 2025, version for north america :