It may seem inefficient today to consider that GM was producing unique 455 Pontiacs ... modern casting techniques and design trends. The result was the "modern" family of big-block Buick engines ...

then 455 cubes. To propel the near-luxury brand's new big-block muscle car past intramural rivals like the big-block Chevy Chevelle, the new Buick big-block was a thin-walled casting, making it a ...

inefficient today to consider that GM was producing unique 455 Pontiacs ... upon modern casting techniques and design trends. The result was the "modern" family of big-block Buick engines ...

This allowed internals other than pistons to be shared with the smaller engines and made Buick's 455 block lighter than that of its GM cousins. The engine appeared in several models, including the ...