Hennessey has built an upcoming package for the all-new 2013 SRT Viper. The tuner came up with renders for two various stages of upgrade, which boost the factorys 8.4-liter V10′s 640 hp and 600 lb-ft of torque figures. The prices for the packages werent released yet but the 700R will deliver 725 hp and 695 lb-ft of torque, enabling the Viper to go from zero to 60mph in only 3.1 seconds. The upgrade is quite extensive, giving the short block some high-flow cylinder heads and numerous bolt-ons like the long-tube headers, high-flow catalytic converters, a 3-inch exhaust system, and a K&N air filter. This package would have a three-year, 36,000-mile limited warranty just like most Hennessey products. Hennessey Performance will drive the 2013 SRT Viper to a whole new level with its 1000 Twin Turbo engine upgrade package. The base model delivers 725 hp but with the package, the output could go as high as 1,120 hp and 1,092 lb-ft of torque. It offers a totally rebuilt long block with a couple of Precision ball-bearing turbochargers. The twin-turbo upgrade is only available with a one-year, 12,000-mile limited warranty.
