Zac Quinn 
The RAM TRX is an epic truck where customers can get 702 horsepower and 650 lb-ft of torque on tap from their local Stellantis dealer. Of course, most buyers will be more than satisfied with this level of performance. Still, John Hennessey isn’t a typical customer, which is why Hennessey Performance Engineering created the Hennessey Mammoth 1000. As is expected when dealing with the tuner Texans at HPE, the Mammoth 1000 cranks the Ram 1500 TRX up to 11. Yet somehow, they’ve managed to find a way to make the truck with over 1,000 ponies and 969 lb-ft of torque even more fantastic with the Hennessey Mammoth Overland Edition.
Hennessey Mammoth Overland Edition: Details
The Hennessey Mammoth Overland Edition is available as a separate package for the Mammoth 900 and 1000 models. It features a hard-shell rooftop tent from Nimbus that should take just a few minutes to set up. The people behind the Venom F5 hypercar also contributed to the edition, throwing in a retractable 55-inch awning and an eight-gallon pressurized water reservoir mounted on the bed rack. However, one of the most valuable items included with the package is the dual auxiliary fuel tanks, considering the TRX’s fuel economy, where the standard version has 12 miles per gallon in the combined cycle. But, of course, that’s before Hennessey gets their hands on the truck and turns it into a Mammoth.
The Hennessey Mammoth Overland Edition is available for an extra $19,950 and features additional LED perimeter lights and grab handles. The tuner will also throw in a 28-inch splitting axe, a shovel, and a ladder to make it easier to access the tent and the other newly added items. Some customers may be seeking even more and can opt for a stage 2 off-road kit that adds meaty 37-inch tires, beefier bumpers, and other upgrades.
The Hennessey Mammoth is 228.9 inches long, 82.1 inches wide, and 77.6 inches tall. So the truck is already quite imposing. But when you take into account the truck’s massive 1,012 hp at 6,500 rpm and 969 lb-ft of torque from 4,200 rpm delivered by a 6.2-liter V8 engine equipped with Hennessey’s 2.65-liter supercharger. The engine has also received a downsized pulley, a new tune, and a high-flow exhaust with stainless-steel headers. This allows the Hennessey Mammoth 1000 to do 0-60 mph in just 3.2 seconds, which is sure to send all of that camping gear flying if not clamped down correctly. For comparison, a stock Ram 1500 TRX takes 4.5 seconds to complete a 0-60 mph dash.
If the Mammoth 1000 has too much oomph for your liking, the 900 may be a better option with high-pressure fuel injectors and their proprietary tune. This brings output to 912 horsepower and 873 lb-ft of torque. Either choice makes more than enough power to take you to the perfect isolated campsite while overlanding, especially coupled with the stage 2 off-road kit. The added 37-inch tires will help you climb over any obstacle relatively easily.
