On a single OHC engine, one camshaft opens and closes both the intake and exhaust valves. SOHC engines generally can run at higher speeds than OHV engines[.] If you're driving a modern car ...
The standard ‘67 Firebird engine was a 230 cubic inch (3.8 Liters) inline six-cylinder with a single overhead cam (SOHC) putting out 165 HP with a single one-barrel carburetor. The upgraded ...