This rare, overhead-cam Pontiac engine was built for SCCA racing and may be the only one remaining.

SlashGear ranks Pontiac's most powerful engines by horsepower, from the iconic GTO to the Firebird leading all the way up to the brand's 2010 shuttering.

Pontiac reportedly had big plans for the RA V, including a short-deck 303-cubic-inch version for the Trans Am and a 400-inch engine for other production models.

Part 2, 1968-1973: Taking an in-depth look at 303 and 366 race engines, plus 366 and SD-455 production engines.

Pontiac produced Ram Air V components for engine displacements such as 303-cubic-inches for SCCA competition, 366-cubic-inches for NASCAR, 400-cubic-inches planned for production GTOs and ...

This second-year Grand Prix was neglected for over 40 years, but now it's back into the light with next to no rust and a 421 V8 ...

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.

This 1962 Grand Prix project, which still comes with plenty of original goodies, is an excellent restoration candidate with rare features ...

I felt that way when a friend tweeted a link to a classified ad for a 2005 Pontiac Montana SV6 with a 303-hp LS4 V8 engine swap. It's brilliant.

Of course, Pontiac replied with the GXP, which received GM's 5.3-liter V8 and 303 horsepower. But the front wheels and chassis couldn't handle the engine's torque, despite being shod with larger ...

GM is recalling 303,000 of its redesigned 2014 Chevrolet Silverado and GMC Sierra pickup trucks in the United States to fix a software glitch that could lead to engine compartment fires.