Cutaway View of V8 Engines
US V8 engine history at a glance
USA history of the V8 engine largely pivots around how 'alternative' engine designs were proven during WW2, effectually changing industrial and public opinion. The post-war V8 designs were a component part of automotive styling evolution, allowing a lower, more sleek hoodline.
When Nash and Hudson merged in '54, AMC then was able to make their own V8 engine two years later in '56.