245cc SBC Race Cylinder Head

The AFR 245cc SBC Race Cylinder Head represents a top-tier performance upgrade for small block Chevy engines, engineered for maximum power and airflow. This head boasts 100% CNC-machined intake runners, exhaust ports, and combustion chambers, enabling it to flow an impressive 350 CFM at 0.800" of lift. Constructed from A356 aluminum, this cylinder head features a 23° valve angle and comes with options for either 70cc or 80cc combustion chambers. The intake port volume is 245cc, with dimensions of 2.200" H x 1.300" W and a 7/16" radius. The exhaust port volume is 80cc, with dimensions of 1.465" H x 1.570" W and a .250" raised location. The deck thickness is .750", and the minimum bore diameter is 4.000". It utilizes a perimeter bolt valve cover pattern and accommodates 14mm x .750" spark plugs with a gasket seat. Key included components comprise 100% CNC ported chambers, ports, and a competition 5-angle valve job. It also features 8mm bead lock intake and exhaust valves, PAC #1225 racing springs capable of .800" max lift, 10° titanium retainers, 10° bead lock valve keepers, Viton valve seals, hardened valve spring I.D. locators, and ductile iron valve seats. Bronze valve guides are also included. It is important to note that the AFR gasket should not be used as a template for port matching intake manifolds, as a single gasket can be used across multiple AFR runner volumes. Additionally, these heads are not legal for sale or use on any public highway and are restricted to dedicated racing vehicles only.