An expert study of the twin-cam engine, from its pre-WW II origins
through the early 1980s: Peugeot, Ballot, Coatalen, Delage, Alfa Romeo,
Humber, Fiat, Aston Martin, Salmson, Rolland-Pilain, Vauxhall,
Sunbeam-Talbot-Darracq, Maserati, Amilcar, Alta, Bugatti, Lagonda,
Triumph, Austin, Mercedes-Benz, Frontenac, Miller, Duesenberg, Packard,
Stutz, Sparks-Thorne, Novi, and more!