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 ...

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 ...

Since the days of relieving flathead Fords, we've known about the advantage of porting. Grind those critical passages with the right touch, and airflow through the engine improves-and with more air ...

While looking around on modified.com recently, I noticed a post on the site's forum asking what cylinder head porting and polishing is. The person who posted it apologized for asking what he felt was ...

Hand-porting cylinder head porting is as much of an art as it is a science, but there's aren't many ways to find more horsepower with just sweat equity. Whether you're hogging the heads you already ...

When introduced for the '05 model year, the C6 received the evolutionary Gen IV LS2 powerplant, which carried ratings of 400 horsepower and 400 lb-ft of torque. While the new engine's cylinder heads ...