It was a 303 engine built in the late '60s for Pontiac by a group in Australia. It was possibly for Trans Am racing and had never been installed in a vehicle.

The Pioneers of the Pontiac V-8: Race Engine Development. Part 2, 1968-1973: Taking an in-depth look at 303 and 366 race engines, plus 366 and SD-455 production engines.

SlashGear ranks Pontiac's most powerful engines by horsepower, ... The Pontiac Ram Air V, also known as the Pontiac 303, was supposed to be the successor to the already popular Ram Air III and IV.

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.

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 ...

Powered by V8 engines rated at over 300 horsepower, ... V8 that produced 303 horsepower in four-barrel form or 330 horses with the Tri-Power setup. ... Pontiac also offered a High-Output (HO) ...

Pontiac’s Grand Prix slots between the mid- and full-size-sedan segments. Redesigned for 2004, ... the Grand Prix GXP comes with a 303-hp, 5.3-liter V-8 engine.

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.

A first-year Pontiac Grand Prix that looks ... beginning with the 389 unit donated by the Bonneville and rated at 303 ... which came with a 421 Super Duty engine and two four-barrel ...

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. I reached out to the van's builder, Kevin Piper, to ...

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 ...