Chevrolet is finally adding the Corvette-derived 6.2-liter EcoTec3 V-8 to the Tahoe. For the 2018 model year, Tahoe customers will be able to order the 420-horsepower V-8, paired with several performance parts as Chevy’s new Rally Sport Truck Package, or RST. Included is GM’s new 10-speed automatic transmission co-developed with Ford and found in the Camaro ZL1 and F-150 Raptor. Larger brakes, a free-flowing Borla exhaust, 22-inch wheels, and a monochromatic appearance package round out the RST option. The Chevy Suburban is also getting the RST, but sadly without the larger V-8.