Since yesterday's Workhorse Engine of the Day, the Toyota R, inspired our readership to make so many good suggestions, we feel compelled to continue the series with today's engine. Suggested by commenter Joe_Bloe, the Flathead was built in the United States from 1932 through 1953 and beyond that in other nations, including France and the USSR. Since we've (arbitrarily) decided that "workhorse engine" means that the engine was built for at least 20 years and was exceptionally reliable and/or versatile for its time, this engine definitely belongs here. [Van Pelt Sales], [Wikipedia]