SBF 220cc Alum Heads 58cc

The Air Flow Research SBF 220cc Aluminum Heads with 58cc chamber (MPN 1451) represents a serious upgrade for Small Block Ford engine builders seeking maximum flow efficiency and combustion chamber optimization. These assembled cylinder heads deliver the airflow characteristics and chamber design demanded by high-performance applications, from street engines to racing platforms where every cubic centimeter of displacement and breathing capacity matters.

The 220cc intake port volume is engineered to maximize velocity and fuel distribution across a wide RPM band, while the 58cc combustion chamber volume provides the compression ratio flexibility required for different fuel grades and boost levels. The 2.100-inch intake and 1.570-inch exhaust valves establish a flow ratio optimized for both street manners and sustained high-RPM operation. Angle-plug configuration ensures centered spark delivery and improved flame front propagation. The 1.550-inch valve springs supply adequate seat pressure and control for aggressive valve events without requiring external shim stacks, keeping installation straightforward. Aluminum construction keeps reciprocating and static mass low—critical for engines pushing toward 7,000+ RPM. The pair configuration (two heads) supports complete engine assembly.

Engine builders, restoration specialists, and performance shops working with Small Block Ford platforms—whether vintage muscle, modern hot rods, or race applications—rely on AFR heads for their flow-tested port geometry and proven chamber designs. These heads suit builders targeting mid-range to high-RPM power without sacrificing street drivability. The assembly is complete and ready for intake manifold, exhaust, and valve cover installation.

Air Flow Research has established a reputation for cylinder head designs that prioritize flow testing data over marketing claims, making their heads a reference standard among SBF builders. The 220cc/58cc configuration is a proven geometry for stroker and high-displacement combinations seeking refined power delivery.