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 ...

Without variable valve timing, these intake and exhaust valves would operate in the same manner regardless of the engine’s RPM (revolutions per minute) speed or the driving environment. This isn’t ...

March 30, 2007 Over the last century of automobile development, we have seen an enormous range of valve actuation technologies, ranging from pushrod, through single then double overhead camshafts, ...

GM has announced that all V-8 powered Chevrolet and GMC trucks now feature variable valve timing (VVT) for the 2010 model year. A quick trip back to engineering 101 reminds us that VVT is a piston ...

Honda's golden age commenced when it introduced the B-Series, the first production engine with variable valve timing and electronic lift control, otherwise known as Honda's VTEC system. The Honda B-16 ...

Alanson Partridge Brush. Remember that name. Because it was according to his patents that Cadillac put into production something that Honda and Alfa Romeo took decades to match. Mr. Brush's invention?

Honda Motor has further developed its VTEC (Variable Valve Timing and Lift Electronic Control System) engine technology with the development of the ‘Advanced VTEC’ engine, which is claimed to achieve ...

In the Si, the 1.5-liter turbo features a 10.3:1 compression ratio, direct injection, 16-valve DOHC with dual variable timing control, and a single-scroll 11-vane turbo with an internal wastegate ...