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 ...

The best way to appreciate the capabilities of the process is to examine the inside of an intake manifold runner before and after the modification. This view shows a stock runner in a TPI manifold ...

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 ...