Ford 300 Inline 6 Performance Head Selection And Airflow Optimization
The Ford 300 cubic inch (4.9L) inline-six is a legend of industrial durability, but its factory cylinder head is the primary bottleneck preventing it from reaching its true performance potential. While the bottom end is virtually indestructible, featuring seven main bearings and a forged steel crankshaft in early iterations, the stock head’s restrictive ports and…
