Chevrolet’s first big-block V8, the “W” series, roared to life in 1958, stepping in like a heavyweight champ to lift increasingly hefty cars. With its unique scalloped rocker covers and offset valves, this wasn’t your grandma’s engine—unless she liked her Sunday drives with a side of 350 hp thrills. The “W” series went from a modest 348 cubic inches to a hulking 427, proving that in the engine world, size does matter. It’s like the Hulk of engines, but with less smashing and more horsepower.