There's a fair bit of science behind how engine turbochargers do what they do (air pressure, compression, fuel burn efficiency, etc.), but basically it will improve an engine's power by around 30 ...

With the 5.7-liter LS engine test complete, we removed the LS and replaced it with our iron-headed 355ci small-block Chevy.

Some engines use a spark to ignite their fuel, and others rely on compression. What does all of that mean? And how do the two kinds of engines differ?