Though LS1-equipped '04 Goats were certainly stout, the bar was raised even further when GM rolled out the evolutionary Gen IV LS2 engine for the '05-'06 models. In addition to a host of improvements, ...

We've been blown away by the performance of our Gen 3 Coyote and this is coming from someone who does a lot of Coyote engine dyno testing. Back in the Gen 1 Coyote days, it took fully worked heads and ...

Cylinder-head port design and modification has been a source of speculation for as long as there have been internal combustion engines. Because engines are power-making air pumps, airflow volume and ...

Cylinder head porting is one of those garage mods that lives somewhere between speed-shop legend and flow-bench science. Also referred to as port and polish, the idea is simple: Open up the intake and ...

With a little help from our friends at Tune Time Performance, we were able to find a willing TrailBlazer (owner Jim Skeenes) in which to test the new FAST (Fuel Air Spark Technology) truck intake ...