Twin-Turbo Shelby GT350 Mustang Brutalizes Its Rear Tires

Ford built the Shelby GT350’s Voodoo V8 specifically to avoid forced induction, engineering it to rev to a screaming 8,250 rpm instead. A shop in Martinsville, Indiana had other ideas, bolting on twin turbochargers to push that same engine anywhere from 1,000 to 1,400 horsepower. Here’s how Fathouse Fabrications turned Ford’s purist flat-plane V8 into something the factory never intended it to be.

If youâ€™re looking for a twin-turbo setup,Â Fathouse FabricationsÂ of Martinsville, Indiana is a shop you should definitely check out. One of the tunerâ€™s latest creations is an excessively brutal Shelby GT350 Mustang.

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Ford built the Shelby GT350’s Voodoo V8 to redline at a screaming 8,250 rpm without a single turbocharger anywhere near it, a deliberate decision meant to set the car apart from every other Mustang on sale. So when a shop in Martinsville, Indiana decided to bolt not one but two turbochargers onto that same flat-plane-crank engine, it wasn’t just adding power, it was rewriting the entire personality of one of Ford‘s most purist performance engines. The results turned a burnout into something closer to a demonstration of exactly how much abuse a stock-block Voodoo can survive. Just how much power can that engine actually take before something gives?

The Voodoo Wasn”t Built to Be Boosted

Ford‘s 5.2-liter Voodoo V8 uses a flat-plane crankshaft, an unusual and expensive design choice for a factory engine that trades low-end torque for the ability to rev far higher than a conventional cross-plane V8, all the way to 8,250 rpm. In stock form it makes 526 horsepower at 7,500 rpm and 429 lb-ft of torque, sent through a six-speed manual to the rear wheels only, with no factory forced induction anywhere in the design.

Fathouse Fabrications” Answer: Add Boost Anyway

Fathouse Fabrications, based in Martinsville, Indiana, built its reputation packaging twin-turbo kits specifically for the GT350’s Voodoo engine, offering staged packages ranging from a 1000-horsepower entry point up to 1,400 horsepower for buyers willing to push the platform to its absolute limit. The core hardware includes a pair of 62mm Xona Rotor dual-ball-bearing turbochargers mounted low in the engine bay to manage heat, paired with new stainless headers, an upgraded fuel system, a high-flow intercooler, and a twin-disc clutch to handle the additional torque.

Nearly Tripling the Factory Output

Even the entry-level 1000-horsepower package represents almost double what the Voodoo makes in stock trim, and the flagship 1,400-horsepower configuration comes within reach of nearly tripling it, all while retaining the engine’s signature flat-plane-crank scream at high rpm. The burnout captured here is a small taste of what that additional boost does to a car never designed to put big turbo-style power to the pavement.

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