Hennessey is no stranger to taking some of America’s most common pickup trucks and considerably growing their efficiency. For its newest project, it created a package for each the Chevrolet Silverado and GMC Sierra, and although not as insane as the 6×6 kits it sells for trucks like the Ram 1500 TRX and Ford F-150 Raptor, the upgrades are nonetheless noteworthy.

The kit, identified as the Goliath 650, is provided for the six.two-liter L87 EcoTec3 V8 located in each the Silverado and Sierra. The Texas tuner begins by bolting a three.-liter supercharger to the V8 prior to supplementing it with a higher-flow intake program, higher-flow intercooler, and a crankcase ventilation program.

Hennessey has then fitted chromoly pushrods, tweaked the engine software program, and installed a stainless steel cat-back exhaust that retains the original suggestions. The adjustments lift grunt to 650 horses and 658 lb-ft (892 NM) of torque.

The engine and exhaust upgrades are offered for the Silverado RST, Trail Boss, LTZ, ZR2, and High Country models alongside the GMC Sierra AT4 and Denali Ultimate. Those who personal a Sierra AT4 can also opt to have their truck equipped with a distinctive off-road package.

This package adds a custom steel front bumper with laser-etched ‘Goliath’ lettering, an LED lightbar, further LED driving lights, 20-inch Hennessey wheels with 35-inch off-road tires, and a suspension lift.

Read: Now Is The Time To Buy A Hennessey F-150 Raptor R 6×6 – If You’ve Got $500,000 To Spare

“GM offers its naturally aspirated 6.2-liter V8 in a range of very capable pickup trucks begging for forced induction,” John Hennessey mentioned in a press release. “We bolt on a big supercharger to pull an extra 230 horsepower and nearly 200 additional lb-ft of torque out of the engine and then back it with a warranty for peace of mind. Our GOLIATH package is ideal for those seeking more power than the factory is willing to offer, whether on-road, off-road, or towing.”

Pricing specifics have not however been released but, like all other upgrades sold by Hennessey, the Goliath 650 package is backed by a three-year / 36,000-mile warranty.