The Pontiac Grand Prix SJ 455 is a revered classic in the automotive world, known for its powerful engine and stylish design. This model stands as a testament to the golden era of American muscle cars ...
Back in 1970, Pontiac introduced a series of changes to the engine lineup available on the Grand Prix, replacing the 428ci (7.0-liter) previously sold as optional for MY 1969 with a new 455ci ...
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