Before color TV was invented, owners of Black & White models figured the technology was perfected. In the same way, everyone figured the American V8 engine had no more tricks up its sleeve. Ford shocked the industry by taking a page from Ferrari by building the first American flat plane V8. The 5.2-liter engine found in the Mustang Shelby GT350 and GT350R is codenamed Voodoo because of the dark magic is hidden inside. The Italian secret of high rpm is to delete the heavy counterweights on the crankshaft and treat the design like two four-cylinders that happen to share the same crank. The result is a 9,000 rpm screamer. You can hear it in action against a Lamborghini, hearing protection advised! In stock form, the Mustang GT350R hp is rated at 526 along with 429 lb-ft of torque.
Natural aspiration is fine for most, but to fully realize the advantages of the design, John Hennessey and his team decided to add boost while removing restrictions on the intake and exhaust. Adding a 2.9-liter supercharger to a 5.2 liter V8 yields incredible results. At only 6 psi, the HPE750 delivers 754 horsepower and 653 lb-ft of torque. Power of this magnitude demands more fuel pressure, so larger injectors are fed by a booster pump. When the build is started, the heads are removed and ported by hand for optimal flow and less risk of detonation. The end result is a Shelby Mustang capable of reaching 60 mph in 3.3 seconds and a quarter-mile of 10.8 @ 133. To put that into perspective, watch a stock Shelby GT350 race a Dodge Hellcat police car. At only 6 pounds, the car and the supercharger are capable of more, but this car was built to last. Hennessey Performance Engineering is offering this Mustang with dyno sheets, dash plaque, serial numbered badging and other goodies for a bargain. The Mustang Shelby GT350R had a base price of $63,245, but good luck finding one for that low. The rarity and power of this Mustang are worth much more than $115,000, so it deserves to be the centerpiece of your collection.