For Ford Motor Company, superchargers are the factory power adder of choice. The '03-'04 SVT Cobra, SVT Lightning, and Shelby GT500s all came from the factory with Eaton Roots-type superchargers. Not only does Eaton supply the factory units to Ford, but it also supplies many of the aftermarket companies with blowers for the kits they sell.
Following the success of Eaton's Roots-type supercharger, the company needed to take its supercharger offerings to the next level. Its Twin Vortices Series, or TVS, is a new four-lobe design created with one thing in mind-power. The TVS design features twin four-lobe rotors twisted 160 degrees as opposed to twin three-lobe rotors twisted 60 degrees in the Roots-type. The result is smoother, more efficient airflow and improved overall performance in a smaller overall package.