As if the 638-hp 2009 Chevrolet Corvette ZR1 wasn’t powerful enough already, Hennessey Motorsports has decided to offer two performance package upgrades for the Chevy beast that takes it up to a total of 755-hp.
The first package, known as the ZR700, adds a supercharger pulley and blower snout upgrade, an intercooler system upgrade, a K&N air filter and a reprogrammed EMC (engine management computer). All that allows the 2009 ZR1 to produce 705-hp with a maximum torque of 717 lb-ft. 0 to 60 mph in just...
Read Article