If You Buy Just One Book About Engines This Year, Buy This6/10/10 10:00am691EditSend to EditorsPromoteGo to permalinkVeloce Today's Pete Vack recently took a look at Griff Borgeson's The Classic Twin Cam Engine, a dive into the origins of the modern overhead-valve powerplant. Tech geekery? Intrigue? Crazy Frenchmen? This is where your engine came from. —Ed.