Sealy, TX - 02.16.2024

Classic Cars TV Reviews: 1000hp Hennessey MAMMOTH 1000 RAM TRX

It’s time for an all-American showdown!

Today’s feature on ClassicCars TV is a 2021 Hennessey Mammoth 1000. Based on the Ram 1500 TRX, the Mammoth 1000 features an upgraded 6.2-liter V8 with a 2.65-liter supercharger to produce enough power to make a Hellcat blush: 1,012 horsepower and 969 lb-ft of torque. The performance upgrades allow a 0-60 sprint in 3.2 seconds and ¼-mile ETs of 11.4 seconds. Production was limited to 200 trucks, all with serial-numbered plaque and — get this — warranty.

This particular Hennessey Mammoth 1000 sold for $143,000 at the 2023 Barrett-Jackson Palm Beach Auction.


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