Watch Hennessey’s 1000-HP Dodge Demon Run a 9.14-Second Quarter-Mile

That is incredibly quick.

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YouTubeHennessey Performance

The folks at Hennessey Performance haven't wasted any time getting their hands dirty with Dodge's factory-built Challenger SRT Demon street-legal drag car. In fact, the Texas-based tuning company has already managed to squeeze out over 1000 horsepower from the Demon's supercharged V8.

Using a Dynojet chassis dyno, Hennessey measured 880 horsepower and 806 lb.-ft. of torque to the wheels, which translates to 1056 horsepower and 967 lb.-ft. of torque at the crank, after factoring in Hennessey's estimated 20 percent drivetrain loss. According to the video's description, the power was achieved using the race-spec ECU included in the Demon Crate—the one that lets a stock Demon run unleaded race gas to make 840 horses. Other upgrades include a high-flow upper supercharger pulley, a high-flow lower crankshaft pulley, HPE engine management software, and stainless steel long tube headers with high-flow catalytic converters.

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Hennessey Performance

Hennessey then released a video on April 27th showing it's 1000-horsepower Dodge Challenger SRT Demon running a quarter-mile of 9.38 seconds at 146 mph, making it 0.17 seconds quicker and six mph faster than the stock Demon at the drag strip. It's worth noting that it appears Hennessey's test driver did not use the trans brake to launch the car.

Over a week later, the folks at Hennessey managed to set an even faster time with the car, laying down a whopping 9.14-second quarter-mile run at 152 mph—0.24 seconds quicker and six mph faster than the previous run above. The tuner claims this makes it the quickest and fastest Demon in the quarter-mile ever. That run can be seen below.

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