Without question, cylinder-head porting is a science. The act of removing metal from the intake and exhaust ports to increase airflow has been used for decades, and in most cases, a skilled head ...

John Lingenfelter has built a killer reputation in the high-performance world. He knows how to tweak a Rat and twist a Mouse's tail to make both of them really sing. In his quest for one more ...

In the search for more power on a supercharged vehicle, one way to improve performance is by increasing the capabilities of the heads and cams. Though the Three-Valve cylinder heads flow much better ...