5.83ft Box Length - The 2025 Chevrolet Silverado 1500 ZR2 diesel is a beast of a truck! Here are some key specs Engine and Performance Engine*: 3.0L Turbocharged Diesel I6 Power 305 horsepower @ 3750 rpm Torque 495 lb-ft @ 2750 rpm Transmission 10-speed automatic with paddle shifters Capabilities Towing Capacity Up to 8,900 lbs Payload Capacity Up to 1,550 lbs Fuel Economy 20/23 MPG (city/highway) Features Infotainment 13.4-inch touchscreen with Google built-in Safety Lane departure warning, lane keep assist, and rear cross traffic alert Interior Heated and ventilated front seats, dual-zone climate control