We understand if you were a little disappointed when the 2014 Chevrolet Silverado was introduced. While clearly a nice truck, the looks are, well, a little on the boring side. Fortunately, Chevy was smart enough to include the option of the General’s naturally aspirated 6.2L V-8 to liven things up a bit. With 420 hp and 460 lb-ft of torque, this small-block makes you forget just how conservative the new Chevy truck is, especially for those who like to flex their right foot and coax the rear rubber into nothing more than a cloud comprised of airborne particulates.

If you’ve ever had the desire to stomp your tires into submission, can relate to the need to enter your neighborhood while sliding sideways, or love to hear the scream of a high-rpm supercharger emanating from under the hood, you might feel that factory power output of the 6.2L leaves a little to be desired. If so, you will be interested to know that Hennessey now offers a way to light a fire under your 6.2L, to the tune of 665 hp (about 545 hp at the wheels).

Thanks to a massive 2.9L supercharger, a high-flow intercooler system, high-flow heads, a custom HPE camshaft, and an HPE engine management calibration, the Hennessey HPR650 kit will let your ’14 or ’15 GM 6.2L truck romp with 658 lb-ft of torque. The kit also includes professional installation, along with dyno-tuning and road testing, serial-numbered dash and engine plaques, exterior badging, and Hennessey-embroidered headrests. Best of all, the kit is warrantied for 3 years/36,000 miles and is 50-state legal.

Don’t feel bad if you don’t own a Chevy, as the $24,950 kit is similarly available for 6.2L DI GMC Sierra and Cadillac Escalade. Hennessey also offers the supercharged HPE600 ($19,950) and HP550 ($15,950) kits for those who want a good time but have a tighter budget or aren’t looking to go out and scare unwitting sports car pilots.

Source: Hennessey Performance