Prior to GXP, Pontiac's Grand Prix performance model was called the GTP. GTP stands for Grand Touring Prototype, and is derived from an IMSA (International Motor Sports Association) class of racing.

Shop 2009 Pontiac G8 GXP vehicles for sale at Cars.com. Research, compare, and save listings, or contact sellers directly from 3 2009 G8 models nationwide.

Rather than the already-admirable 260 hp in the standard GXP, the overboosted engine in this SEMA version delivers a nice round 300 hp and 315 lb.-ft. of torque all the way down at 3250 rpm. Skip ...

Especially if we’re talking about the 260-horsepower GXP version. I’m sure I’ll get mocked for admitting it again, but I have such a soft spot for pre-recession performance cars from GM.

With Pontiac's new performance GXP designation, you could find Solstice models, the G6, and the short lived G8 also with a GXP trim. In 2007, the Pontiac Solstice GXP increased performance from ...

The GXP packed a 5.3 LS engine onto the Pontiac's W platform, which was created to house a transverse V6. Because of that, the engine required some mods to fit, including changes to the crankshaft ...

The 2009 Pontiac G8 GXP is just the sort of four-door Corvette Americans have long prayed for, with sharp steering, fabulous response from the four-piston Brembo brakes, exceptionally balanced and ...

The GXP's small price increment negates any reason to purchase the base car, and it's sure to be sold out for the foreseeable future. Pontiac says up to 40 percent of Solstice production, or 8000 ...

Sadly, the G8 GXP only makes 415 hp, but with a 6.2 liters V8 and 415 lb-ft of torque, it's clearly the better engine. Remember, there's no replacement for displacement.

Pontiac GXP: V8 makes a return Scott Olson/Getty Images Regarding the Grand Prix, it had sadly lost it's V8 in the late 80s, but the larger engine did return in the 2005 model.