When I think of progress at the big three American automobile manufacturers, I am reminded that Chevrolet introduced a 288 cubic inch 90-degree V8 with overhead valves, 3.375" bore and 4" stroke in 1917. They didn't build another V8 until 1955, and it was virtually identical to their 1917 model. This engine design is still one of the most popular on the road today, almost 90 years later.