Just days after Ken Lingenfelter of Lingenfelter Performance Engineering said the new C7 may not be capable of producing much more than 700-hp, Hennessey Performance Engineering has announced it plans to offer two very powerful engine performance upgrades for the 2014 Corvette Stingray later this year. Lingenfelter expressed reservations last week about the upper limits

German tuners GeigerCars has made a reputation building some outrageous special editions from American cars, including Corvettes, Camaros and Chargers. But quality work doesn’t come with a cheap price tag. This special Corvette ZR1 pumps out 730-hp, but GeigerCars says it is completely streetworthy. They upped the horsepower by nearly 100 over the standard 638-hp