The SBC CNC 18-Deg Cylinder Head 272cc Bare is a high-performance cylinder head designed for small-block Chevrolet (SBC) engines. Built for racers and engine builders looking to maximize airflow and power output, this 18-degree cylinder head features a larger 272cc intake runner volume, making it ideal for high-revving, big-horsepower applications. CNC-machined for precise intake and exhaust port alignment, this bare head allows for customization and further porting as needed, giving you the flexibility to build your engine to exact specifications.

Technical Specifications

• Head Type: Bare Cylinder Head
  • This head is sold as a bare casting, which means it includes the basic structure of the cylinder head, but it does not come with valves, springs, or retainers, allowing for custom components to be added.
• Intake Runner Volume: 272cc
  • The 272cc intake runner volume ensures optimal airflow for larger cubic inch engines, offering significant power potential for high-performance applications, particularly in motorsport and racing environments.
• Valve Angle: 18-Degree
  • The 18-degree valve angle promotes better combustion chamber efficiency and airflow, allowing for increased power production and improved throttle response, particularly in higher RPM ranges.
• Material: Aluminum
  • Manufactured from high-quality aluminum, this cylinder head offers lightweight construction while maintaining durability and strength. The material allows for better heat dissipation compared to cast iron heads, preventing overheating and improving engine performance.
• Porting: CNC Machined
  • CNC machining ensures consistent, precise port alignment, which improves airflow, reduces turbulence, and enhances overall performance. The heads are ready for further porting or modification based on specific engine requirements.
• Valve Size: To Be Determined
  • Since this is a bare cylinder head, the valve size and configuration are customizable. This allows engine builders to select the ideal valve size for their specific engine setup and performance goals.

Performance Benefits

• Increased Airflow for Maximum Power: The larger 272cc intake runners help provide increased airflow, which is essential for making power in larger engines or when using higher camshaft profiles. This increase in airflow helps your engine breathe better, resulting in more power.
• Optimized Valve Angles: The 18-degree valve angle provides improved combustion chamber efficiency, helping increase horsepower and torque. It also optimizes air and fuel mixture flow, reducing turbulence and ensuring a more efficient burn.
• Customizable for Performance Needs: The bare cylinder head design allows for custom valve setups and porting. Whether you want to upgrade for higher RPMs or larger engine builds, you can tailor the head to match your specific performance requirements.
• Lightweight Aluminum Construction: Aluminum is much lighter than cast iron, which reduces overall engine weight and improves the engine’s responsiveness and RPM potential. This material also provides excellent heat dissipation, helping to prevent engine knock or detonation.

Design Features

• CNC-Ported for Precision: The CNC machining process ensures that the ports are evenly shaped and aligned for optimal airflow. This precision results in a smoother flow of air and exhaust gases, reducing restrictions and enhancing engine performance.
• Enhanced Combustion Chamber Design: The 18-degree valve angle enhances the combustion process, ensuring that the air-fuel mixture burns more efficiently. This results in better throttle response, more efficient power delivery, and a cooler-running engine.
• Durable Aluminum Construction: The lightweight, yet durable, aluminum construction helps reduce engine weight and increases reliability. Aluminum heads also have better heat dissipation properties, which contribute to the longevity of the engine.
• Bare Casting for Customization: As a bare head, this product allows you to choose your preferred components, including valves, springs, retainers, and seals. This feature is ideal for race car builders or anyone looking to build a custom engine that suits their specific needs.

Installation & Maintenance

• Installation: Installation requires standard cylinder head mounting tools and gaskets for SBC engines. You’ll need to choose the appropriate components, such as valves, springs, and seals, based on your engine’s setup and intended performance.
• Maintenance: Routine maintenance involves regular inspection of the head for cracks, warping, and proper sealing. The aluminum material makes it less prone to corrosion compared to cast iron heads, but it is important to keep the head clean and check the gasket sealing surfaces.

Compliance

• Emissions: This product is intended for high-performance applications, including racing, and may not comply with emissions regulations for street use in some regions. Please check local regulations before installation if you plan to use it on a public road vehicle.
• Durability: The CNC machining and quality aluminum construction meet high standards for durability and performance, making these heads suitable for high-stress racing environments.