Historically, miost of the largest-displacement engines in production today, only one is a six-cylinder. Two decades later, huge inline-six engines were still popular in luxury cars like the legendary Bentley 8 Litre, which wore its engine's displacement as its nameplate. In general, V6 engines don't reach displacements anywhere close to their inline-six or V8 cousins. Many of the highest-horsepower modern V6 engines feature displacements in the 3.0-liter range, but there are a handful of older V6 engines that have boasted significantly higher displacement figures. Many of those big V6 engines can be found under the hoods of trucks, but a few cars have also sported a high-displacement V6 in place of a traditional V8.