Tuners: 2004 Lingenfelter Pontiac GTO With the emphasis on "Oh!"

Many petrol heads consider the 1964 Pontiac GTO to be the first real musclecar. Pontiac is hoping its latest GTO will be as successful as that original of four decades ago. The 2004 version offers plenty of adrenaline-pumping hardware (350-horsepower Corvette-sourced V-8, six-speed gearbox, tight suspension, and sporty 17-inch wheels), and its performance is solid--but there's room for more.

Answering the call for added thrust and improved grip is Lingenfelter Performance Engineering. One of the aftermarket's best LS1/LS6 engine tuners, LPE has released a series of GTO packages that give the Goat more gallop. Although three engine packages are available, we tested LPE's base package with "only" 450 horsepower, representing a 100-horse step up from stock. More...