What Was The First Engine To Feature Variable Valve Timing & Why Was It Such A Game Changer?

Variable valve timing has been available in cars for almost half a century, first appearing in the Alfa Romeo Spider as far back as 1980.
Hot Rod

Why Variable Valve Timing? IVC Systems' 1999 Breakthrough Helps to Answer

To celebrate HOT ROD's 75th anniversary, we teamed up with CASTROL GTX to bring you some of the stories that exemplify the core of what HOT ROD is and reflect the brand's influence on America's car ...