In more than four decades, the Grand Prix showcased all sorts of engines. But one stands out for its horsepower ... though it ...

In the May '06 issue, we discussed the Grand Prix's evolution from the Catalina platform in 1962 to its own for 1969. The new G-body Grand Prix boasted of fresh body styling highlighted by strong ...

When it came time to purchase my first car, I immediately looked to Pontiac. My first love, the GTO, was a bit out of my price range, so I ended up purchasing a '74 Grand Prix SJ. Its 455 made me ...

Catalina Super Duty 155 Grand Prix Super Duty Pontiac's 421 Super Duty is a 6.9-liter naturally aspirated V8 engine, built with a cast iron block and head design. The engine used a 4.09-inch bore ...

It is gorgeous in glossy Mandalay Red over a white Morrokide ... the hood of the Pontiac Grand Prix Super Duty resides the powerful 421 cubic-inch V8. Finishes in the spartan engine bay appear ...

Pontiac’s famous Tri-Power triple-two-barrel induction system faded into history, replaced by a spread-bore Rochester Quadrajet four-barrel carburetor. The base GP engine was a 350-hp 400 ...

Pontiac developed its first Grand Prix for the 1962 model year. By the time 1964 strolled around, it was Pontiac's third best-selling car. Despite the 1964 model not yielding as much popularity as ...