His big break came in the late '70s when he became Dyno Don Nicholson's Pro Stock Ford crew chief ... to the world exclusively through Jeg's. Valve angle plays a big role in port flow for several ...

Airflow varies depending on the distance between the valve and its seat. What's more, valve seat angle(s) determines flow as well. Sometimes, we get better airflow with less valve lift.

Over a production life lasting from 1958 until the mid '70s, Ford's FEengine family experienced ... cross section at turn,bowl width, valve-seat angle, and inside diameter. MACHINING--Taking ...