Did Pontiac Make a 428 Engine?

The Pontiac 428 cubic inch engine was used only from 1967-69. It was one of the largest engines Pontiac produced, but it was used more to power big cars such as the Bonneville, and not as much for performance cars such as the Firebird.

What is a 428 Pontiac engine?

The 428 was Pontiacs top engine for 3 short years- 1967-9. The bore is the same as the 400 at 4.12". The stroke is 4", the main journals are 3.25". The 428 has remained one of the favorite Pontiac engines for racers and hot rodders and, are always one of the most sought after for a build up.

How do I know if I have a 428 Pontiac?

On 1968–69 428 blocks you will find “428” stamped between the freeze plugs. On blocks produced in 1970 and after, you will find 350, 400, or 455 stamped towards the left side of the front of the block.

Elena Rostova

Elena Rostova

Lead Health, Wellness & Medical Journalist

Elena Rostova holds a Master's degree in Public Health Journalism. She covers groundbreaking medical research, holistic wellness trends, mental health awareness, and nutritional science.