Michael Johnson
Technical Editor
June 2, 2017

In many ways, the 2013-2014 Shelby GT500 was very similar to the 2003-2004 Cobra. The 2003-0404 Cobra was the car everyone wanted. It set the bar really high for others to unsuccessfully reach. The 2013-2014 Shelby GT500 also set the bar a little too high for anyone else to reach. With 662-horsepower from the factory, and a reported 200-mph top end, it was truly a world-beater.

Also, just like the 2003-2004 Cobra, once the 2013-2014 GT500s reached public hands, the cars became even quicker and faster. It didn’t take much for enthusiasts to wring 600-rwhp out of the cars, and with a little more work, 700-rwhp.

Power by the Hour dropped the engine out of Ryan’s Shelby GT500 to install L&M custom cams and American Racing Headers 1 7/8-inch long-tube headers, but the TVS remains factory stock. The inlet side of things were also improved thanks to a PBH XBA inlet with a Kenne Bell monoblade throttle body, and a JLT Performance 148mm cold air intake. With a Lund tune, and on E85, the combo is good for over 800-rwhp at just 14 pounds of boost.

For Ryan McGauley, he sent his 2014 GT500 to Power by the Hour (PBH) for a few performance upgrades. He wanted to max out the performance of his factory TVS supercharged combination. With a stock bottom end, PBH added L&M NSR custom cams, American Racing Headers 1 7/8-inch long-tube headers, and Injector Dynamics ID1300 injectors. On the air inlet side of things, PBH added its XBA inlet with a Kenne Bell 168mm monoblade throttle body, and a JLT Performance 148mm cold air intake.

On pump gas, Ryan’s GT500 made 768-rwhp and 692-rwtq, but on E85 the combo busted across the 800-horsepower barrier, making 811-rwhp and 718-rwtq at 14 pounds of boost. PBH used a Lund Racing tune via an nGauge. And with that, Ryan set the bar even higher for anyone trying to keep up.