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Hennessey Tests Its Own HPE575 Shelby GT350 Mustang On The Dyno: Video

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For more than two-dozen years, Hennessey Performance Engineering has been turning some of Ford’s best vehicles into superb performance machines.

That includes the latest track-ready Shelby GT350 Mustang.

The company currently offers two different packages for the already-capable super-Stang: the normally-aspirated HPE575, and the supercharged HPE800. Recently, the company uploaded a video of the former undergoing dynamometer testing, and beside the heart-stopping sound, the numbers, too, warrant consideration.

Running the current-generation Shelby GT350 through the rev range on the dyno, Hennessey recorded a peak rear-wheel horsepower of 504, and a peak wheel torque of 408 lb-ft. A standard 15% loss through the drivetrain would mean around 593 horsepower at the crankshaft, which is well above the 575 horsepower advertised. (Customer’s mileage may vary.)

The HPE575 kit for the 2016+ Shelby GT350 incorporates stainless long-tube headers, a stainless mid-pipe exhaust upgrade with high-flow cats, an engine management upgrade and calibration performed by Hennessey Performance Engineering, some necessary fluids and gaskets, and some visual upgrades like plaques and badges.

If you’re looking to optimize the engine output and overall performance of your 2016 or later Shelby GT350 Mustang, but want to keep the original aspiration setup, the HPE575 package from Hennessey might be for you.

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Aaron Brzozowski is a writer and motoring enthusiast from Detroit with an affinity for '80s German steel. He is not active on the Twitter these days, but you may send him a courier pigeon.

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