Simply put, an engine is a pump. By increasing its ability to ingest fuel and air, convert it to energy, and evacuate the remains, it will make more horsepower. We set out to show just what you can ...

Simply put, an engine is a pump. By increasing its ability to ingest fuel and air, convert it to energy, and evacuate the remains, it will make more horsepower. We set out to show just what you can ...

Before we begin, let us recap the premise of this story. In our October 2008 issue, we did a story called "Generation Gap." In it, we took a stock 5.3L LS1 engine from a wrecked '02 Suburban, then ...