1. Net valve lift is the amount of lift (imparted to a valve) as measured at the camshaft lobe. 2. Valve duration is the period of time during which a given valve is off its respective seat and ...

If we were to ask for a show of hands, it’s a safe bet to assume many enthusiasts would reluctantly admit that camshaft theory is one of those topics that causes more than a little consternation. You ...

In the early days of high- performance engine building, hot rodders discovered that when they squeezed the intake and the exhaust lobes closer together, the engine responded with more power. That ...