The knock sensor on your Toyota VVTi engine is basically a microphone that senses if detonation occurs in one of the cylinders. The detonation happens when the fuel-air mixture ignites before it’s ...

In our LS Engine Picker's Guide article (click here) we scavenged backyards and junkyards for LS engines, blocks, cylinder heads, intake manifolds, and other essential parts for your next build. Well, ...

While some Gen IV engines do use cathedral port cylinder heads, pretty much all are of the later, LS6 design. By 2009, cathedral port use was mostly restricted to just the 5.3L engines while all but ...