When Ford rebooted the Shelby GT350, the company didn’t just put a different badge on existing engine. Instead, Ford Performance engineers went into the lab with the Coyote 5.0-liter and came out with a magical new powerplant — the 5.2-liter Voodoo engine. At the time, it was the longest stroke flat-plane crankshaft engine produced.

This valvetrain setup is good for supercharged, turbocharged and nitrous applications. — Zeke Urrutia, Ferrea Racing Components

Designed to delivery the fat midrange and scintillating rev range that a road-course-oriented Mustang needs. With 526 horsepower on tap and an 8,200-RPM redline, the Voodoo engine is a potent performer right off the dealer lot. However, we enthusiasts are never satisfied with stock, so if you want to push your 5.2-liter engine with more RPM or by strapping on a power adder, Ferrea Racing Components has the valvetrain upgrades to ensure that it howls for many moons into the future.

If you want to push your Voodoo 5.2-liter engine harder than Ford Performance engineers ever intended, Ferrea has the valvetrain upgrade for you in the form of its Ford Voodoo 5.2-liter 2015-2017 (GT350) Dual Spring kit (PN KT4032; $2500.80).

The upgrade in question is the Ford Voodoo 5.2-liter 2015-2017 (GT350) Dual Spring kit (PN KT4032; $2500.80). This complete upgrade is designed specifically for the Voodoo cylinder heads includes dual valvesprings, titanium retainers, seat locators and hat seals.

“This valvetrain setup is good for supercharged, turbocharged and nitrous applications,” Zeke Urrutia, Director of Marketing at Ferrea Racing Components, said.

The kit includes Voodoo-specific dual springs, hat seals, seat locators, and titanium retainers meant to withstand  big boost, high RPM, and nitrous.

In other words, if you are ready to cast a really evil performance spell, Ferrea has the goods to take your GT350 heads to another level.