The 2021 Ram 1500 TRX boasts a factory-quoted 702 hp and 650 lb-ft of torque, however that is as measured on the crank, not the wheels. Hennessey Efficiency Engineering tried to measure how a lot energy the TRX makes on the wheels by strapping one to a dyno, however solely ran numbers for the rear wheels.

The dyno take a look at confirmed 538 hp and 570 lb-ft of torque on the rear wheels. That represents round 17% driveline loss, which is not unusal for a pickup truck. Hennessey beforehand recorded 20% driveline loss on the rear wheels when it examined a 2019 Ford F-150 Raptor.

The TRX is full-time four-wheel drive, so that you is likely to be questioning how Hennessey acquired dyno outcomes for the rear wheels solely. Firm founder John Hennessey advised Motor Authority that four-wheel drive was briefly disabled by disconnecting the entrance driveshaft.

Whereas the TRX was designed for off-roading, the quantity of energy produced by its 6.2-liter supercharged Hellcat V-8 makes this truck fairly fast on pavement. Ram says it should do 0-60 mph in 4.5 seconds.

Inevitably, that wasn’t sufficient for Hennessey. The corporate has developed extra highly effective variations of every Hellcat-powered vehicle, and it is doing the identical with the TRX. Dubbed the Mammoth 1000, Hennessey claims its tackle the TRX will boast 1,000 hp, will do 0-60 mph in 3.2 seconds, and run the quarter mile in 11.4 seconds.

To attain these numbers, Hennessey plans to equip the Mammoth 1000 with an upgraded supercharger, pulley, and air consumption, stainless-steel headers, high-flow exhaust piping (retaining the catalytic converter), and new engine mapping. The worth for the entire truck is $135,350, and Hennessey solely plans to construct 200 this yr.