Adding boost above 8,000 rpm is a recipe for incredible power, and it is the impetus for an unsolicited Hennessey Shelby GT350R customer testimonial. Ford and Shelby took a page from Ferrari’s playbook to build the GT350. The first American V8 to use a flat-plane crankshaft makes its power with engine speed instead of low-end grunt. In stock form, the experience of shifting at screaming rpm is a delight. John Hennessey and his team decided to make the most of the engine’s incredible airflow with a belt-driven intake and a full-stainless exhaust.
Their 3-liter supercharger is geared to make meaty boost at higher revs, so it transforms 526 horsepower into 858 with 673 lb-ft of torque. 200 miles of shakedown testing and tuning on the street is how they offer a 2-year/24k warranty, and it also allows a Charger Hellcat to roast the Demon!
Image (C) Hennessey Performance Engineering