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.

Check out this article on variable valve timing systems from Honda's VTEC to Toyota's VVT-i and Nissan's CVTC, from Super Street Magazine.

Jason has a wealth of experience with GM’s VVT and offered some interesting points. Variable valve timing offers some wonderful opportunities for the engine designer and builder.

Variable valve timing (VVT) plays an important role in bridging performance with efficiency. Should you disable VVT on your hot rod machine? We examine the options.

Honda’s VTEC (Variable Valve Timing and Lift Electronic Control) technology is a game-changer in automotive engineering, enhancing both performance and efficiency in engines. This video provides a ...

We test GM's new variable valve timing system and get dozens of horsepower with not sacrificing and torque. Only at www.hotrod.com, the official website for Hot Rod Magazine.