Ask any engine builder where he would concentrate his efforts if he could only modify one component in an engine, and most would say the cylinder heads. Even the sleepiest street engine can see power ...

For an engine to work, a fresh mixture of air and gas has to be able to enter and exit the cylinders. These induction and exhaust processes also need to occur at the correct moments, otherwise the ...

We are all too familiar with the shortcomings of the Ford 6.0L Power Stroke engine. We talk all the time about its EGR and oil-cooler failures. However, one of the powerplant's lesser-known issues is ...

Ask any professional racer or engine builder and you'll hear that cylinder-head airflow is the most important factor in achieving the greatest peak horsepower from any engine. For years Pontiac racers ...