What are splay valved heads?

Splay valved heads are a type of engine cylinder head design where the intake and exhaust valves are positioned at an angle to each other, rather than being parallel. This configuration allows for improved airflow and better combustion efficiency by optimizing the path that air and exhaust gases take through the engine. Splay valved heads are often used in high-performance and racing applications, where maximizing power output and engine responsiveness is crucial. This design can contribute to a more compact engine layout, allowing for better packaging in various vehicle designs.