If you're driving a modern car, chances are you're driving something with a dual overhead cam engine. They're the most efficient type you can get, and they produce the most power for their size.

However, one outstanding constant throughout the lineage of Alfa Romeo cars both on track and on the road is the Twin-Cam engine. As one might assume based on the name, it's a dual-overhead ...

a document leaked on the web suggests that the General will change direction and introduce a new 6.2L dual overhead cam (DOHC) engine in 2011. Many gasped when Ford switched its V8 engines in the ...