That little tidbit helps explain why Hennessey recently turned the leanest, meanest Mustang of modern day into an even more brutal prizefighter—yes, the all-new Shelby GT350 Mustang.
From the gates, Ford Performance has loaded up the square-jawed Shelby with a potent 526 horsepower and 429 lb-ft of torque. That would be enough for most muscle car palates, but apparently not enough for all. A new Hennessey “HPE575” package cranks that engine output up to 575 horsepower and 511 lb-ft of twist, but most importantly, it does so without the complications of forced induction. No twin-turbos or raucous superchargers to be seen here.
Instead, this GT350 Mustang swallows a new stainless steel exhaust system, which tacks on 1.75-inch long-tube headers, a new mid-pipe section, and high-flow catalytic converters. With the help of an engine management tune, the 5.2-liter “Voodoo” V8 at the Shelby’s snout now exhales easier, but no word on straight-line performance just yet from those extra 49 ponies.
The package accompanies a few requisite “Hennessey” badges inside and out, as well as a serialized number plaque. Only 100 cars will be so equipped. Looking to spot one? Best check a track—the GT350 was bred to race.
The free-breathing Shelby isn’t the only new pony in this stable, though. For those who are looking to turn tires into goo, Hennessey will also affix a 2.9-liter supercharger and some other go-fast goodies to the new GT350 Mustang—all in the name of 808 horsepower. Yikes. Zero to 60 mph? Just 3.3 seconds.