Pontiac's 455 ci V8 engine was its largest ever, ideal for muscle cars in the 1970s for torque and lower emissions. The 421 ...

For instance, General Motors once owned both Pontiac and Oldsmobile, and each company had its own distinct 455 V8 engine. You might think that GM would want to standardize across all its brands as ...

At the time, the H/O 455 was the biggest engine offered in the mid-size segment, not only within General Motors but across the whole of Detroit. Even the Corvette’s L88 trod carefully around the ...

Pontiac created ... sold 4-4-2s with a 455 stuffed between the fenders to Demmer, and it would buy them back as Hurst-Olds 455s and then sell them to the public. The ban on engine size had no ...

First introduced in the '70s, the 7.5-liter Pontiac 455 V8 would be used in many of the company’s models, such as the Grand Prix and Firebird. Unfortunately, like most V8 engines of the era ...