526-horsepower V8 to make Shelby GT roar - Detroit Free Press

The radical 526-horsepower V8 that will power the Shelby GT 350 Mustang thundered to life for the first time in public outside Ford Motor Co. 's performance engineering center in Allen Park just outside Detroit Tuesday. It's the most powerful naturally aspirated street-legal engine in Ford's history. Designed to rev up to 8,250 rpm – nearly four times the revolutions per minute a run of the mill V8 might hit at highway speed – the engine sets several new marks for production engines. From the archives: 2015 Ford Mustang is ready to take on the world. The V8 features a flat-plane crankshaft, bigger engine valves and unique air intake and exhaust systems to generate extraordinary levels of power, including 429 pound feet of torque at 4,750 rpm. The engine's horsepower output of more than 100 hp per liter of displacement is almost unprecedented for an American V8 that doesn't use turbo or supercharging. In addition to bigger valves and new air intake and exhaust passages, the unusual crankshaft helps the engine use air more efficiently and rev at higher rates. The Shelby will be the only engine in production with a front-mounted flat-plane crankshaft, setting it apart even from exotic cars with six-figure price tags. From the archives: Ford unveils powerful 2016. Source: www.freep.com