Both models are capable of hauling hefty loads, but the 2015 Ford F-350 has the overall edge. Its standard 6.2-liter V8 engine produces 383 horsepower and 405 pound-feet of torque. With it, the F-350 tows up to 16,100 pounds using the conventional trailer hitch. Choose the 6.7-liter diesel V8 engine, which increases output to 440 horses and 860 pound-feet of torque. Using a fifth-wheel setup, the diesel F-350 can tow up to 26,700 pounds.

The 2015 Chevrolet Silverado 3500HD standard engine is a 6.0-liter V8 that makes 360 horses and 380 pound-feet of torque. There's also an optional turbocharged 6.6-liter diesel V8, which generates 397 horses and 765 pound-feet of torque. Properly equipped - and depending on body configuration - the Silverado can tow up to 23,300 pounds.

On the road, the 2015 Ford F-350 is smooth, comfortable, and capable. It was designed to tow and haul heavy loads with ease, but it also performs well without any additional burdens. Steering is quick and responsive. At highway speeds, the F-350 cabin is as hushed as a luxury SUV.

Here the Chevrolet Silverado 3500HD isn't far behind. As with the Ford F-350, performance is strong and capable over a variety of terrains, including twisting mountain roads and tight city streets. Overall, the ride is smooth and comfortable.

Although both pickup trucks deliver spacious seating and modern convenience features, the 2015Chevrolet Silverado 3500HD pulls ahead. Seating is supportive and comfortable. Top trim models offer top-notch upholstery and attractive cabin trim. The available OnStar telematics system comes with a 4G LTE Wi-Fi connection, keeping drivers connected on the go.

The 2015 Ford F-350 also impresses with its upscale cabin options. Passengers can expect wide, plush seating. Top-tier trim models add a touch of luxury with leather upholstery. The available MyFord Touch infotainment system lets users interact with a wide range of apps to stay connected from the road.

The 2015 Ford F-350 is our pick for safety, thanks to its impressive range of standard equipment. Its trailer sway control helps drivers control heavy loads. Hill start assist keeps this heavy pickup from rolling backward at stops. The rearview camera makes backing up a snap. The standard SOS post-crash alert system automatically notifies emergency services after a crash.

The Chevrolet Silverado 3500HD competes well in this category. Its OnStar telematics system helps drivers solve unexpected issues, using features like on-demand roadside assistance and remote door unlocking. The available Driver Alert package adds advanced safety systems to increase driver vigilance, including forward-collision alert.