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Racing Valve Seats Flow Test Graph

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This mean flow velocity test on a stock high-performance Chevy head shows the significance of the valve seat's role toward flow is higher than the port's up to the circled area (0.390 inch lift). This establishes that the seat's role in overall airflow is higher than generally believed.
Valve Seat Power

 This mean flow velocity test on a stock high-performance Chevy head shows the significance of the valve seat's role toward flow is higher than the port's up to the circled area (0.390 inch lift). This establishes that the seat's role in overall airflow is higher than generally believed.  View Related Article

 

 

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