Katech Engineering LLC - HEMI Cylinder Heads, Parts & CNC Porting Services

Performance HEMI Cylinder Heads, Components & CNC Porting

HEMI cylinder heads, components, and CNC porting services play a critical role in airflow, combustion, and overall engine performance. Proper cylinder head configuration directly affects power output, efficiency, and long-term reliability in both street and competition applications.

Katech develops HEMI cylinder head solutions to support increased airflow, stable valvetrain operation, and consistent performance under demanding operating conditions. Port geometry, valve sizing, and chamber design are refined through controlled machining processes to maintain airflow consistency and combustion stability across the engine’s operating range.

• Supports improved airflow and combustion efficiency
• Maintains valvetrain stability at higher RPM
• CNC-machined for consistent fitment and repeatability
• Suitable for performance street and competition engines
• Designed for HEMI-based engine platforms

Complete cylinder head assemblies, individual components, and CNC porting services are available to match application-specific requirements. Valves, springs, retainers, guides, seals, and related hardware are selected to maintain proper geometry, component control, and durability under load.

Since 1977, Katech has developed cylinder head solutions through professional motorsports and high-performance engine programs. That experience is applied directly to airflow development, machining processes, and component selection across HEMI applications.

All machining, assembly, and validation is performed in-house at Katech’s Clinton Township, Michigan facility using the same processes applied to professional motorsports programs.