AFR 23° SBC Cylinder Head 220cc Competition Package Heads, Spread Port Exhaust, 65cc Chambers

AFR’s 220cc SBC Race Cylinder Head is designed for high-performance racing applications and radical "Pro Street" builds. These heads feature 100% CNC ported intake, exhaust, and combustion chambers, ensuring maximum flow and efficiency. Constructed from A356 aluminum castings, this is AFR’s largest and best-flowing cylinder head compatible with conventional rocker arms. The Competition Package enhances performance with precision-machined components, offering unparalleled airflow and durability.

Included Components

100% CNC Ported Combustion Chambers
100% CNC Ported Exhaust Ports
100% CNC Ported Intake Ports
Competition 5-Angle Valve Job
8mm Bead Lock Intake Valve, 2.100" x 5.000" Overall Valve Length (AFR #7256)
8mm Bead Lock Exhaust Valve, 1.600" x 5.030" Overall Valve Length (AFR #7254)
PAC Racing Spring 1.550" OD Solid Roller Dual Valve Spring, 220 lbs on seat, .710" maximum lift, Max RPM 7200-7400 (AFR #8000)
10° Steel Retainers (AFR #8511)
10° Bead Lock Valve Keepers with Lashcap Recess (AFR #9009)
ARP 7/16" Rocker Studs (AFR #6405)
Adjustable 5/16" Guide Plates (AFR #6103)
Viton Valve Seals (AFR #6612)
Hardened Valve Spring I.D Locator (AFR #8048)
Ductile Iron Intake & Exhaust Valve Seats (AFR #9060 & AFR #9070)
8mm Bronze Valve Guides (AFR #9051)