The new LT1 engine in the 2014 Corvette will be rated at 460 horsepower at 6,000 rpm with an available performance exhaust upgrade. Standard SAE rating for the 6.2-liter V8 will be 455 horsepower, according to GM’s announcement today.

Chevy also released peak torque numbers of 465 lb-ft at 4,600 rpm (460 lb-ft for the standard exhaust) and included a horsepower/torque dyno chart. At 74 horsepower per liter, the LT1 has greater power density than the C6 Corvette’s LS3 6.2L engine and even the C6 Z06’s racing-derived 7.0L LS7. It also produces comparable torque to the LS7 – up to 4,700 rpm – and its peak torque is within 5 lb-ft of the 7.0L engine.

According to GM, that torque starts early and sustained across the rpm band, with 316 lb-ft available at only 1,000 rpm and 90 percent of peak torque available from 3,000 rpm to 5,500 rpm.

As EngineLabs has noted in a previous technical overview, the power outputs come from an optimized combustion chamber, direct injection and variable valve timing. To enhance fuel economy, engineers adapted cylinder deactivation or Active Fuel Mangement (AFM) to the Corvette engine. Chevy says the Corvette will run from 0-60 in less than four seconds while getting more than 26 mpg on the highway.

GM has yet to announce numbers for the 6.2-liter EcoTec3 version of the LT1 that will go into the next generation Silverado pickup. Horsepower and torque ratings for the 5.3-liter EcoTec3 will be 355 horsepower on gas and 380 horsepower on E85 with respective peak torque numbers of 383 lb-ft and 416 lb-ft.