There are a lot of older Dodge Ram 1500s serving as primary work trucks for professional landscapers and contractors of all types. One of the popular models are those with the 4.7L because that engine ...

If an engine’s induction system is only as good as its weakest link, then a set of 400-cfm cylinder heads, giant intake valves, and mega-flow carburetors don’t mean squat if they’re getting choked ...

Six years ago I was looking for ways to boost power and fuel economy in my 2002 Chevy TrailBlazer’s 4.2L inline-six. A gearhead always curious about new aftermarket upgrades and technology, I turned ...

Most of the time when an aftermarket parts manufacturer wants us to tout its latest speed part, all we get is a press release full of promises. Airaid, on the other hand, wanted us to actually test ...