Sam Krahn 
After a long hiatus, the Shelby name made a return in 2007 to cap the Ford Mustang performance lineup. This fifth-generation (S197) Mustang family culminated in 2013 with the Mustang Shelby GT500 muscle car, which shocked the world with a massive 662 hp and a top speed of 202 mph. This fire breathing, bucking, kicking pony was a proper sendoff. But for some people, the power of the fifth generation Shelby models isn’t enough, and a new Whipple supercharger is here to help your S197 Ford Mustang Shelby GT500 transform into an even faster horse.
This new 3.8 liter Whipple supercharger works for all fifth-generation Mustang Shelby GT500 models, and is a bolt on replacement for the stock unit. Unfortunately, no direct horsepower stats are given, only that it can yield north of 2,000 hp in a race build application. In other words, you get to choose your adventure in this case, knowing that the new twin-screw system will be up to the task.
The Fresno, California-based company says its new 3/4 asymetrical rotor design that allows for higher boost levels, while decreasing temperatures from the factory supercharger. Depending on model, this should get some serious hp gains before other modifications end up being added.
Regardless of the fifth-generation Shelby GT500 model year, $6,200 is the price of entry. That said, Whipple notes the massive 3.8 liter supercharger won’t fit under the stock hood of any year Mustang Shelby GT500 without a K-Member spacer kit ($350) and adjustable motor mounts ($180). Additionally, the company also has a slightly different air inlet for the 2007-2009 and 2010-2014 models.
The supercharger comes standard in a textured black, but can be painted in a variety of different colors. Whipple also offers a number of throttle bodies to be paired with the supercharger. Godspeed to whomever is brave enough to add more power to a 662 horsepower road car with a live axle.
