This is a category that is pretty rapidly going away. You'll be hard-pressed to find an overhead valve — also known as a pushrod — engine in anything outside of a General Motors LS/LT V8 or ...

The Bonneville debuted in 1957 as a convertible with only two optional equipment choices, and just 630 units were assembled; ...

single overhead camshafts and overhead valve engines. Then, you can spread your newfound knowledge to everyone else who is too scared to ask someone at a car show for fear of being made fun of.