Hennessey Gives the Chevy Silverado ZR2 a Goliath Horsepower Upgrade

The name Goliath conjures up images of size and power, so it's a perfect fit for the latest creation from the Texas-based horsepower freaks at Hennessey, who have given the 2026 Chevrolet Silverado ZR2 a monstrous supercharged upgrade. The Goliath 700 ZR2, as it's been dubbed, gives the top-tier Silverado ZR2's 6.2-liter V8 a twin-screw supercharger with air-to-water intercooling and a new ECU tune that results in a 66 percent output boost, or 700 horsepower and 611 lb-ft of torque. For the record, the V8's stock figures are 420 hp and 460 lb-ft, enough to get from 0-60 mph in 5.6 seconds. With the Goliath 700 upgrade, the sprint drops to just 4.2 seconds—not bad for such a behemoth. Of course, Hennessey didn't just upgrade what's under the hood and stop there.

Hennessey Goliath 700 ZR2 Gets Trick Suspension

The ZR2 is already a factory-built off-roader, but there's always room for improvement in the aftermarket scene, and Hennessey has fitted its Goliath 700 ZR2 with a suspension upgrade from BDS with integrated Multimatic DSSV shock absorbing dampers, allowing buyers to use all that extra horsepower off-road without fear of instability. The improved suspension should also result in better on-road manners, allowing for comfortable highway cruises. Well, as comfortable as you can get when there's tire noise from 35-inch off-road rubber.

This is wrapped around 20-inch Hennessey off-road wheels, and the Goliath is further enhanced with custom steel bumpers at the front and rear, integrated LED lighting, and a functional carbon fiber hood vent that promises to improve cooling. Hennessey also fits some badges so that Ford Raptor R and Ram TRX drivers get fair warning before trying to bully the Goliath 700 ZR2. It's worth noting that, while this isn't a factory Chevy upgrade, the engine bay looks impeccably neat, with only a subtle Hennessey plaque indicating that there's more power here than when the ZR2 left the Flint Assembly plant in Michigan.

Limited-Edition Hennessey Goliath 700 ZR2 Costs Six Figures

With the enhanced suspension, revised styling, aggressive wheels, and that mammoth performance upgrade, the Goliath 700 ZR2 is not cheap, commanding an MSRP of $139,950. The good news is that the package is available through Hennessey-authorized Chevy dealers and comes with a three-year/36,000-mile limited warranty. The price also pays for exclusivity, as just 100 examples of the Goliath 700 ZR2 will be produced. The 2027 Ram 1500 SRT TRX is expected to be a little cheaper at around $102,590, but you have to wait for it to arrive, and the 2026 Ford Raptor R is also a little more affordable at $112,460, but neither of these options will be as rare.

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