The American tuning studio Hennessey Performance presented a program of refinement for the new supercar Chevrolet Corvette ZR1, designed to significantly improve the performance of the model. Modification of the coupe includes three stages. The first variant, called HRE850, includes the installation of a new valve spring, cylinder head, push rod and exhaust system. All this allows to increase the output of the 6.2-liter V8 from the original 765 to 862 hp. Next comes the modification of HPE1000, the engine on which already develops 1,000 forces. Here, an additional increase provides the installation of a new mechanical supercharger. The top version of the HRE1200 provides for increasing the recoil of the engine of the new Corvette ZR1 to 1 217 “mares”. To do this, Hennessey will increase the engine capacity to 7.0 liters and install new aluminum pistons, forged connecting rods, crankshaft, intercooler, cylinder head and compressor. Dynamic characteristics of the intermediate modifications (HRE850 and HPE1000) were not disclosed, but it is known that the HPE1200 version accelerates from zero to hundreds in 2.2 seconds, and the drag range is quarter of a mile (402 meters) supercar rides for 9.2 seconds. The maximum speed coupe can exceed 370 kilometers per hour, while the car from the factory can be accelerated “only” to 341 km/h.