5.4L Ford Triton w/ 3 valves per cylinder:
The Ford 'Triton' engine made its debut in 1997 and was offered in many pick up, van and SUV applications. The Triton family of engines included the 4.6L and 5.4L V8 engines, as well as the 6.8L V10 engine. The featured version of the Triton was released in 2004, is the 5.4L size and features 3 valves per cylinder for a total of 24 valves. These engines feature Variable Valve Timing (VVT) to attempt to improve performance, fuel economy and/or emissions.
5.7L Chrysler Hemi:
Not to be confused with the original 'Hemi' engines offered by Mopar in the 1950's and 1960's, this Third Generation Hemi design was offered in 2003 and later applications and encompassed the Dodge, Chrysler and Jeep lines. These 'Hemi' engines came in many different forms including the addition of an option in 2005 with Multi-Displacement System (MDS) for greater fuel economy as well as the addition of an option with Variable Valve Timing (VVT) in 2009 and later applications.
5.3L & 6.0L GM LS (Gen III and IV)
The 'LS' line of engines from GM has been hugely popular since they were first unveiled, taking over for the famous small block line of engines. The Gen III and Gen IV versions of the LS line were offered in many pick up, van, SUV and car applications and ranged from 4.8L to 7.0L sizes. The later model versions of this engine feature Active Fuel Management (AFM) to increase fuel economy and decrease emissions.