Decades ago (OK, half a century or more), there was a product advertised in many of the performance magazines called the Varicam. The idea was a set of springs attached to a centrifugal device that ...

The 3.6 L V-6 on the 2008 STS is General Motors' first V-6 gasoline engine with direct injection. Combined with other powertrain changes including variable valve timing, the fuel economy of the STS ...