Watch in action

Unleash Big Block Power with AFR 265cc CNC Magnum Cylinder Heads

Elevate your Big Block Chevy's performance to new heights with these Air Flow Research (AFR) 265cc CNC Magnum Street Cylinder Heads. Engineered for serious power, these assembled heads are designed to maximize airflow and combustion efficiency for street and strip applications.

Performance-Driven Features:

• Aggressive Porting: Feature 265cc intake runners and a 72cc combustion chamber, optimized for significant horsepower gains.
• CNC Machining: Precision CNC-milled intake and exhaust ports ensure consistent airflow and maximum performance potential.
• Premium Components: Assembled with high-quality valves (2.190" intake, 1.880" exhaust) and a robust 1.550" diameter valve spring package capable of handling aggressive camshafts.
• Durable Aluminum Construction: Lightweight yet strong aluminum construction promotes better heat dissipation and easier engine assembly.
• Magnum Street Design: Specifically designed for Big Block Chevy Magnum applications, offering a direct fit and improved performance over stock heads.

These AFR heads are the perfect choice for enthusiasts looking to upgrade their Big Block Chevy's breathing capabilities. Whether you're building a high-performance street machine, a drag car, or a competitive engine, the advanced design and meticulous manufacturing of these cylinder heads will deliver noticeable improvements in torque, horsepower, and overall engine response. Experience the difference that cutting-edge cylinder head technology can make.

Get the ultimate performance upgrade for your BBC. Explore the full range of Air Flow Research products at GGCRACING.