Automakers strive to produce the highest-performing engines that meet their budget goals. That often means the performance gains from porting and polishing intake (and exhaust) ports aren't ...

Port fuel injection has some big advantages, but automakers increasingly are using gasoline direct injection instead. The ...

During the course of building, modifying or merely "sharpening up" an overhead valve V8 engine, the question of intake port alignment usually arises. With in-line and flathead V-type engines the ...

Mopar Performance has been in the aluminum head market for quite a few years now with their Stage VI variations, which deliver the one-two punch of more power and lighter weight. The Stage VI heads ...

We've gone a little rotary engine crazy around here, but the more of these spinning triangles we throw at you, the more positive feedback we seem to get. In fact, I get more e-mails and social media ...