At the end of the day, an internal combustion engine is just an air pump. Proper airflow in and out of the engine is thus ...

So far, we only have about 1,600 bucks into our 406 short-block, including assembly and a bit of farmed-out labor (see July and Aug. '06). To complete the job, we started looking around for cylinder ...

High-performance valves are usually classified as either servo or proportional, a distinction that gives an indication of expected performance. Unfortunately, this classification tends to generalize ...