Eddie Maloney
July 10, 2017

Bill Wagner and his family are truly lifelong automotive enthusiasts, admiring anything from an exotic sports car to American Muscle. However, owning a Shelby GT500 was always on their bucket list, so in 2011 they purchased one from Tommy Vaughn Ford in Houston, Texas. Shortly after the purchase, Bill and his son Billy Jr. decided to take their new Shelby to Royal Purple Raceway and see what she could do. That night, a true street style race was being contested and low and behold, Jr. won the 12.00 index class.

At this point you could say the rest is history but the future for this hot rod does not involve drag racing. Instead, Billy and his dad set their sights on the Texas Mile. In October 2012, Billy, ran the Shelby for the first time in the standing mile after just a few upgrades on the car, and ran a top speed of 218.1 mph, which was a class record at the time.

In 2014, the Wagner’s realized that they would continue to get faster, but needed to make sure the car was ready for it. They brought the Shelby to East Texas race cars in Lufkin, Texas for a few upgrades. The result was a complete NHRA certified funny car style cage, and full Safecraft Halon fire suppression system. They also opted to have all insulation and carpet removed after seeing several other cars catch fire. The factory door panels remain, as well as the dash and glove box signed by Carroll Shelby. The factory seat was replaced by a Corbeau piece with an RCI five-point harness.

While they were going faster at each event, they still weren’t 100-percent satisfied with their setup; that is until they met Kevin and Mark and their 2006 Ford GT from M2K Motorsports. They took the Shelby into their shop in Fulshear, Texas and gave it a complete evaluation. After much success with the engine from Accufab racing engines in their own Ford GT, they recommend a similar set up for the Shelby.

The engine has come a long way from the factory blown 5.4L; the Accufab built twin-turbo monster now pushes over 2,500 with ease. The guys at M2K tell us this engine is very similar to the one in their Ford GT, which has the potential to reach 3,000 horsepower.

The heart of this 2011 GT 500 is the engine built by Accufab. It features a 5.4L block with twin intercooled 80mm turbos from Garrett Turbochargers. Dyno pulls on this engine showed some pretty incredible numbers, pushing approximately 2,500 horsepower on Methanol. To maintain these numbers, a built bottom-end was needed. They added a custom-built Bryant billet crankshaft, JE pistons, and Manley rods. The cylinder heads were off a 2006 Ford GT engine and all the work was handled by Accufab. Other engine parts include Comp roller cams, a custom sheetmetal intake, and a Dailey billet oil pump and pan.

The stock fuel system was replaced with a Waterman Little Bertha setup, an Aeromotive regulator, 220 lb/hr injectors, and an Accufab 90mm throttle-body. The air/fuel is controlled by a Motec system and tuned by Naoto Negishi. Naoto is factory trained Motec tuner and is the exclusive tuner for M2K Motorsports. For exhaust, custom fabricated headers with front fender exits were made in house at M2K.

So, what else makes this car reach speeds of over 260 mph in the mile? A good transmission and suspension of course. Calvo Motorsports of Austin, Texas beefed up the Tremec TR 6060 transmission with a Pfitzner Performance sequential gearbox and a Spec E-trim twin-disc clutch assembly. All suspension components are in their stock locations and the factory rearend was upgraded to a stronger 9-inch assembly. The 9-inch was stiffened up with a Mark Williams spool and Strange axles. BMR supplied the upper/lower control arms for both the front and rear suspension, while the shocks were upgraded to Eibachs. As if the car wasn’t unique or intriguing enough on the inside, the chrome blue/carbon fiber wrap by Crowley Designs will surely get your attention. This Shelby sports a lift off style carbon fiber cowl induction hood and an added Carbon fiber rear spoiler for down force. The Mustang sits on CCW forged wheels (a division of Weld Wheels) wrapped in Hoosier R7 road race tires. Stopping power is provided Brembo brakes up front with Strange brakes out back; the brakes are also complemented by the single Stroud Bonneville style parachute out back. Bill stated there was no expense spared in building this car and safety is always to priority when he straps in his son behind the wheel.

Although this Shelby doesn’t see much street time any more, Bill wanted it to remain as stock appearing as possible, especially with the coveted signature from Carroll Shelby. There were no shortcuts taken on this car and it’s fully caged with a funny car style halo surrounding the driver and a complete fire suppression system.

The Texas Mile events are held twice a year, during the Spring and Fall. At the March 2017 event, both M2K rides aimed to set records, and they did. After a few shake down runs, Billy piloted the Air Tech of Houston/M2K Motorsports Shelby to over 260 miles per hour, a record for the Shelby GT500 class. After the run Billy said, “I’ve never felt anything so fast, but I am ready for more. The car performs flawlessly and I am just along for the ride.” Billy has driven this car from the moment it left the showroom floor bone stock to its latest 260 mph accomplishment. The owner, Bill Sr. said, “I am very happy with the way the car is performing now. The combination of the Accufab engine, overall maintenance and performance from M2K, and tuning by Naoto just meshes well. We look forward to breaking more records at each mile event.” Bill hinted to us there might be a slight possibility of a Ford GT in their future, but only time will tell.

Twin turbos always look mean on every ride, but these pop against the chrome blue wrap. Aerodynamics is critical in this form of racing and the front fascia was replaced so that air can only flow over the cowl induction hood and underneath the custom splitter.

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