Stock Car Racing Homepage

Racing Valve Seats Unported Heads

Prev Next
Many classes call for unported heads, so you could be starting with a production casting (shown) or an aftermarket equivalent. The only avenue open to modification is the valve seats, and how they are cut can be a deciding factor in overall engine performance.
Valve Seat Power

Many classes call for unported heads, so you could be starting with a production casting (shown) or an aftermarket equivalent. The only avenue open to modification is the valve seats, and how they are cut can be a deciding factor in overall engine performance.  View Related Article