SBF 185cc Alum Heads Renegade 58cc

The SBF 185cc Alum Heads Renegade 58cc cylinder head from Air Flow Research delivers the performance foundation serious Small Block Ford builders demand. Engineered for street-driven applications requiring balanced power and reliability, this aluminum cylinder head pairs a 185 cubic centimeter intake runner with a compact 58 cubic centimeter combustion chamber—a proven combination for efficient fuel mixing and consistent ignition across the RPM band. Whether you're building a classic hot rod, muscle car restoration, or high-output street engine, this assembled head arrives ready for installation.

Precision aluminum construction reduces overall engine weight while maintaining the thermal stability required for sustained high-output operation. The 185cc intake port flows fuel-air mixture efficiently to support responsive throttle response, while the 58cc chamber volume optimizes compression and combustion geometry. Standard 2.020-inch intake and 1.600-inch exhaust valve diameters maximize breathing capacity, and the 1.290-inch valve springs provide robust sealing under aggressive valve train loads. The angle-plug configuration accommodates standard Small Block Ford ignition systems and improves flame propagation in the combustion chamber. This pair (two heads) arrives fully assembled and ready for bolt-on installation to any compatible SBF block.

Engine builders, restoration shops, and dedicated enthusiasts benefit from AFR's reputation for cylinder head accuracy and durability. The Renegade Street series balances peak power with part-throttle driveability, making it ideal for daily-driven builds that demand both performance and longevity. Installation follows standard Small Block Ford protocols; verify deck height, gasket surface condition, and stud torque specifications before assembly. These heads pair seamlessly with factory or aftermarket manifolds and deliver measurable gains in horsepower and torque when matched with compatible intake, fuel system, and ignition upgrades.