Unless you want a racing engine from Judd, there are no current production V10s. But that doesn't mean V10s are rare; you just have to know where to look. Hint: under the hood of a Ford motor home.

V10 engines aren't particularly common in road cars, but there was a time when two of America's Big Three automakers engineered V10s to replace big block V8s in their heavy duty truck platforms. Even ...