A Hennessey Goliath 700 Sierra is for the buyer who wants a GMC-based supercharged truck with a coordinated suspension, wheel and exterior package—not simply an AT4 with different badges. The useful starting point is the actual build. Our catalog reviewed October 12, 2026 lists stock G291902, VIN 3GTUUEEL4TG291902, as a 2026 Sierra 1500 AT4-based Goliath 700.
The listing identifies an Onyx Black crew cab, 6.2-liter V8, ten-speed automatic and four-wheel drive. Confirm its current location and availability before travel; a catalog record is not a guarantee that the truck is on the lot when you arrive.
What the Goliath package changes
The dealer equipment description advertises 700 horsepower and 611 lb-ft with a twin-screw supercharger, air-to-water intercooling and HPE engine calibration. These are the listed conversion figures, not a dynamometer test performed for this article. Ask for the matching build record and fuel instructions rather than applying them to every Sierra or every vehicle carrying a Hennessey badge.
The difference is also visible around the chassis. G291902 is described with 20-inch Hennessey wheels, 35-inch off-road tires, BDS suspension equipment and FOX 2.5 coilovers with reservoirs. It lists steel Goliath bumpers, a skid plate, a front light bar, auxiliary pods, power running boards and carbon-fiber hood and tailgate details. Compare that complete package with the equipment you would actually select on a standard Sierra.
AT4, AT4X and Goliath are not interchangeable labels
A factory trim identifies the starting truck; an upfit identifies additional work. This listing names an AT4 base. Do not describe it as an AT4X or assume the shock system, seats and off-road equipment of a different Sierra are included. Likewise, Hennessey's Goliath 700 Silverado ZR2 announcement concerns a Chevrolet-based configuration, not a substitute build sheet for this GMC.
This distinction helps a shopper who likes the GMC design but wants a much more extensive package. Instead of pricing a trim upgrade as though it were a supercharger conversion, make separate columns for the original vehicle, added powertrain parts, suspension, wheels, exterior hardware and cabin changes.
Who should put this Sierra on the shortlist?
Consider G291902 when you already prefer the Sierra crew-cab layout, want a supercharged V8 and would choose the listed exterior and suspension equipment together. Having a named completed build to inspect can make that comparison more concrete than estimating a collection of future modifications.
A stock Sierra may be the better purchase when you mainly need transportation, do not want the added height or tire costs, or would not use most of the conversion. Our recommendation is to value the equipment you want, not assign extra value simply because a long accessory list exists.
Check daily ownership before choosing the look
Measure garage clearance and step-in height, obtain a replacement-tire quote and test parking visibility. Request the applicable base-vehicle, conversion and component warranty documents and the service contacts. Review fuel requirements and maintenance for this engine calibration.
Horsepower does not increase the truck's certified payload or towing limits by itself. Check the finished vehicle's labels, installed hitch and manufacturer/upfitter instructions with your actual passengers, cargo and trailer.
Is every Goliath 700 built on the same truck?
No. Platform, year and package details differ. Match the vehicle and its documentation.
Does the name guarantee a limited production count?
No production count is established here. Any rarity claim requires documentation for the relevant edition.
Compare the GMC you can actually buy
Browse custom inventory and Sierra 1500 inventory, then send G291902 and your requirements to our Pauls Valley team. Continue with the custom-vehicle guides, Goliath documentation checklist and garage-measuring guide.
