That, in turn, would give the horsepower crown to the 2005-2008 Pontiac Grand Prix GXP, a front-wheel-drive sedan backed by a 5.3-liter V8 that's good for 303 ponies.

An article from the pages of the October 1997 Hot Rod magazine, shared online by MotorTrend, reports the first supercharged 3.8-liter Grand Prix GTP had 240 horsepower at 5,200 rpm and 280 lb-ft ...

1968 Pontiac Grand Prix Fires Up After Years of Inactivity – With a V8 From Another Era Published: 1 Dec 2023, 22:09 UTC • By: Razvan Calin 23 photos ...

1969 was the first year for the J and SJ badges. This Grand Prix SJ is one of about 10,000 units fitted with the 370-horsepower V8.