Power at the wheels is some way off the quoted figures.
Earlier this year, Hennessey unveiled the Mammoth 1000, a modified version of the already comically powerful Ram 1500 TRX. While the stock TRX produces 702 horsepower and 650 lb-ft of torque, the Mammoth 1000 generates 1,012 hp and 969 lb-ft, dropping the zero to 60 mph sprint time to just 3.2 seconds. New Ram 1500 TRX models have been arriving at Hennessey for the Mammoth 1000 modifications, but before that, the team decided to hook up a stock 1500 TRX to the dyno to find out just how much power the mighty truck makes at the wheels.
Here, it's worth pointing out that the 1500 TRX is four-wheel-drive only with no RWD mode, so it's not clear how Hennessey was able to measure the truck's output at the rear wheels independently. Nevertheless, following the test, the TRX returned figures of 583 hp and 571 lb-ft at the rear wheels. Due to unavoidable drivetrain losses, that represents a 17 percent loss of power. That's a notable loss, but it's still more than what we expect the 2021 Ford F-150 Raptor will manage from its 3.5-liter EcoBoost V6 engine once Ford confirms these figures. Of course, a V8-powered Raptor is on the way as well. Even before Hennessey's upgrades, the 1500 TRX has proven to be easily the quickest truck on the market.
Hennessey's Mammoth 1000 is capable of its extreme outputs thanks to the addition of a 2.65-liter supercharger along with a high-flow exhaust system, among other changes. In this guise, the 6.2-liter Hellcat V8 engine remains. Hennessey intends to make 200 examples this year at a cost of over $135,000. That's close to double the price of a new stock 1500 TRX, but it's not as much as some ridiculous dealer markups; in some cases, we've spotted TRXs approaching $150,000. We can't wait to see the Mammoth 1000 decimate other trucks and sports cars alike on the drag strip, and knowing Hennessey's proclivity for theatrics, we shouldn't have to wait too long for that.