SBF 195cc Compt Cylinder Heads (pr) 58cc Assem.

The AIR FLOW RESEARCH SBF 195cc Competition Cylinder Heads (pair) with 58cc assembled chambers represent purpose-built Small Block Ford performance architecture. These aluminum heads deliver optimized flow characteristics for high-RPM Small Block Ford engines, featuring 2.050-inch intake valves and 1.600-inch exhaust valves that maximize air charge efficiency across the RPM band. Competition-grade cylinder heads of this specification are engineered for serious horsepower applications where combustion chamber geometry and valve sizing directly translate to measurable power output gains.

The 195cc intake runner volume on these heads supports excellent mid-to-high RPM cylinder filling, while the 58cc chamber size contributes to compression ratio calculations and combustion efficiency. Angle-plug configuration accommodates modern ignition systems and spark plug heat ranges. The 1.270-inch valve springs provide appropriate preload for competition valve train speeds without over-constraining components. Assembled heads eliminate machine shop delays and arrive ready for installation, with all internal components indexed and torque-checked. Each pair weighs 63 pounds, reflecting the substantial aluminum casting required for this flow capacity.

SBF cylinder head selection depends on engine displacement, intended RPM ceiling, and fuel type. The 195cc intake runner size suits engines from approximately 347 to 408 cubic inches, particularly when peak power targets extend beyond 6,500 RPM. Competition builds—drag racing, oval track, and road racing applications—rely on AFR heads for flow testing data and head gasket surface quality. Small Block Ford modification specialists specify these heads when OEM castings cannot deliver required volumetric efficiency at target boost levels or naturally aspirated RPM ranges.