Topic summary
Overhead camshaft
Extracted from the Wikipedia article Overhead camshaft engine.
Single overhead camshaft (SOHC)
The oldest configuration of overhead camshaft engine is the single overhead camshaft (SOHC) design. A SOHC engine has one camshaft per bank of cylinders, therefore a straight engine has a total of one camshaft and a V engine or flat engine has a total of two camshafts (one for each cylinder bank).