Hennessey’s New 650-HP Supercharger Kit for GM Trucks

December 29th, 2023 by


Strong like Goliath — Hennessey’s got you covered!


More horsepower — 55 percent more to be exact — it’s as easy as this! Hennessey’s new “Goliath 650” package aims at giving Chevy and GMC pickup trucks more oomph! That extra horsepower, which is noteworthy to say the least, is thanks to a new supercharger kit that works perfectly on all standard 6.2-liter (L87 EcoTech3) GM V8 engines offered in the Chevy Silverado and GMC Sierra.

Out of the gate, the Silverado and Sierra, both V8-powered trucks, make 420 hp and 460 lb-ft of torque. Thanks to Hennessey’s kit, though, that increases to 650 hp and 658 lb-ft.


The kit includes a bunch! There is a 3.0-liter supercharger that is accompanied by a high-flow intake, high-flow intercooler, a crankcase ventilation system and chromoly pushrods. With the Hennessey’s engine software calibration, all works perfectly and harmoniously to pump out the nearly Corvette Z06 levels of power in these full-size trucks. Hennessey has also installed a stainless steel cat-back exhaust that retains the original tips. That change takes the truck to 650 horses and 658 lb-ft of torque.


For those who own the Sierra AT4, the off-road version of the GMC pickup, there is also a Goliath Off-Road package which comes equipped with a new steel front bumper, an LED light bar, off-road suspension and much more! There are also 20-inch wheels and 35-inch off-road tires. It is just with the Sierra that this Goliath package is available, not for the Silverado package. Instead, the normal Goliath 650 kit is offered on all 6.2-liter V8 Silverado and Sierra models.


While pricing is not yet revealed, nor is the exact availability of the kit, it is common knowledge that all of these upgrades handily come with a three-year, 36,000 mile warranty. To take advantage of these Goliath kits, customers need to send their existing trucks to or order the trucks with the kit from either authorized Chevy or GMC dealers. Another option is to order directly from Hennessey by calling 1.979.885.1300 or visiting HennesseyPerformance.com.


This upgrade, although the cost yet is unknown, is truly a positive and a clear enhancement for many GM truck owners. In essence, through this kit, drivers can upgrade to a performance version of their truck without having to trade it in for a new one. They will have, ultimately, a LT4 upgrade in a box!

Hennessey, the Texas-based hypercar manufacturer and high-performance vehicle creator, brings this possibility to the forefront. This comprehensive upgrade delivers a whopping 55 percent increase in horsepower and 43 percent increase in torque. This takes stock output to a whole new level!


Making cars faster has been at the Hennessey’s core since 1991. In addition to the Goliath 650 and its capabilities comes branding, with a custom front steel bumper boasting “GOLIATH” laser-etched into the plate. There are also additional LED driving lights, 20-inch Hennessey wheels with 35-inch off-road tires and a suspension lift.


“GM offers its naturally aspirated 6.2-liter V8 in a range of very capable pickup trucks begging for forced induction,” John Hennessey, company founder and CEO, said. “We bolt on a big

supercharger to pull an extra 230 horsepower and nearly 200 additional lb-ft of torque out of 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 wiling to offer,” he continued, “whether on-road, off-road or towing.”


The Goliath 650 power upgrade is offered for the following: Chevrolet Silverado RST, Trail Boss, LTZ, ZR2 or High Country and the GMC Sierra AT4 and Denali Ultimate with the L87 motor.


Exciting and highly anticipated, more power is to be had, thanks to Hennessey. Strong like Goliath, they’ve got you covered. Keep your eye out for this offering!