Just a day after the official power figures were announced for the C7 Corvette's LT1 6.2-liter V-8 come ballpark figures for the related engine in the 2014 GMC Sierra and Chevrolet Sliverado. Yesterday, we ran a post speculating on the features the truck-spec L86 engine would share with the LT1.

Today, we have a little better idea of output the engine will make. General Motors announced the L86 6.2-liter direct-injected V-8 would make an "estimated" 420 hp and 450 lb-ft of torque. Official SAE power figures will be released later in the year, but we think it's a safe assumption that final figures will come in slightly higher than those ballpark figures, with horsepower coming in at 425 to 435, and torque at 455-460 lb-ft. These stout output figures are projected to give the Sierra 1500 a maximum estimated towing capacity of 12,000 pounds, edging the half-ton ever closer to the turf of its heavy-duty stablemates.

Other news included in the power teaser is that the 6.2-liter engine will also be offered on the Sierra SLT trim in addition to the topline Denali. The Denali will feature a trim-exclusive 8-inch touchscreen navigation head unit, LED running lights, and an available Z71 off-road package, which adds Rancho shocks, Hill descent control, a transfer-case shield, and a Driver Alert package.

In a break from the previous-generation model, the 2014 GMC Sierra Denali will come standard with the 355-hp, 5.3-liter L83 direct-injected V-8, with the 6.2 being a stand-alone option.

Source: General Motors