The 2015 Shelby GT Mustang starts off with the very same 5.0L Coyote V8 from the Mustang GT but the similarities end there as the Shelby GT features a Ford Performance Racing Parts 2.3L TVS supercharger that bumps the power output all the way up to 650hp. You’ll also notice the unique Shelby aluminum caps on the overflow tanks that give the Shelby GT a little more sophistication under the hood. A Shelby cold air intake ensures the supercharged Coyote gets an adequate supply of air to let all 650 horses loose at a moment’s notice while a set of 3.73 gears allow the Shelby GT to get moving in a hurry.
The Ford SVT Raptor is without question one of the ultimate street-legal go-fast off-road rigs you can buy and hit the dirt in. While the Raptor is incredibly fast in the desert, it leaves plenty to be desired on the table. Contrary to keyboard racers, the Raptor is not a Trophy Truck, but it was built to race—in fact, it did just that back in 2008 at the 41st SCORE Baja 1000. Of course this means that improving upon the performance of the Raptor is quite an uphill battle if you still want the truck to have decent road manners.
But more than the history and visual cues, the Scat Pack package is a nod to all the engineering and performance upgrades that must necessarily accompany a powerplant of this magnitude. Improvements over the 5.7L Hemi R/T Challenger include larger four-piston Brembo brakes, wider and taller 20-inch rubber, a larger-diameter 2.75-inch dual stainless-steel exhaust system, Performance Pages, aerodynamically enhanced spoilers, an uprated 3.09:1 limited-slip rear, higher-output 220-amp alternator, and High-Performance suspension. And except for Performance Pages, it’s all needed to safely meet the needs of the Scat Pack’s 177 mph top speed.
Enthusiasts will tell you there are three types of shifting: granny, speed, and power. Simply stated, if you shift aggressively but lift off the gas, you’re speed shifting. If you ram the gears with the throttle held on the mat, you’re powershifting. Granny shifting is not worth talking about. In any case, you want to complete the shift as quickly as possible and with as little flare in the rpm. Timing is everything. Practice makes perfect. If you’re uncomfortable powershifting, try it at a lower rpm until your shifting is seamless.
We recommend doing only enough of a burnout to clean the tires, as street tires don’t really react like slicks or drag radials. Don’t sit there and smoke ’em too long, or you will draw the oils from within the tire to the surface and that will actually make them slick, not sticky.
In addition to giving you the scoop on our quarter-mile times, we figured we would include our driving technique and offer a few tips so you can get the most from your Mustang. This can be applied to any Mustang, old or new, stick or auto. Ultimately, your best times will come once you’ve refined your driving technique and your talent in regards to burnout, staging, launching, and shifting. Let’s begin with the burnout.
The 2015 is comfortable and nimble on the street. It has good power and a great sound too. We were anxious to get on track, do a real burnout, and launch on a prepped surface. What we found is that the 2015 Mustang is tricky to launch compared to the out-going S197 Mustang. Why? In layman’s terms, the live axle in the S197, which is considered somewhat crude, provides great feedback for drag racing. The three-link suspension does a fantastic job of planting the tires and transferring the torque loads to the body to create pitch rotation (nose lift) to transfer weight from front to back. The heavy axle assembly also gives lots of feedback to the driver and really communicates what the tires are doing.
We spent a week with this yellow screamer hitting all the local hot spots, including Bradenton Motorsports Park, home of the NMRA Spring Break Shootout. Our GT was equipped with the standard rear gear (not 3.73s) along with the Getrag MT-82 six-speed, and we ran the car 100 percent stock—so no drag radials or tune. Heck, we didn’t even cool the engine! Traction was good, but the temperature was 84 degrees with mild humidity—not mineshaft conditions, by any means, but not sweltering either. Based on our experience we were hoping to break in the 12s at about 110 mph.