TheHEMI.com

We'll get straight to it. Hennessey Performance just built the hell out of a Jeep Trackhawk by jacking up the horsepower from 707 (well done, SRT!) to 1,200 hp as measured at the crank. It goes 0-60 mph in 2.3 seconds and runs the quarter-mile in 9.66-seconds at 145 mph. It's Bugati Chiron and Dodge Demon fast, and they're only building 24 of them.

It.s Hennessey's HPE1200 engine upgrade that makes these ludicrous numbers possible. The cylinder heads are ported, the pistons, rods, and camshaft are all upgraded, and exhaust escapes through stainless-steel long-tube headers. The cherry on top (literally) is the 4.5L supercharger forcing the Earth's atmosphere through the 6.2L engine at 22psi of boost. On 109-octane fuel, the engine produces 1002hp and 892lb-ft. of torque at the tires.