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

AFR's 220cc "Race Ready" and "Competition" heads feature 100% CNC ported intake, exhaust, and combustion chambers. Crafted from high-quality A356 aluminum castings, these cylinder heads are designed for high-performance applications. AFR’s 220cc Competition heads deliver exceptional airflow and are ideal for race engines or radical "Pro Street" builds. They are engineered for use with conventional rocker arms, making them the largest and best-flowing heads in AFR’s lineup.

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 1.550" OD Solid Roller Dual Valve Spring, 220 lbs on seat, .710" max lift, 260° max recommended duration, 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)

Performance & Flow Data

AFR's 220cc Competition heads offer industry-leading airflow performance. Tested at 28" of water pressure on a Superflow 1020 bench with a 4.155" bore size, the results speak for themselves.

220cc Competition Head Flow Chart (CFM)

Lift (in)	.200	.300	.400	.500	.550	.600	.650	.700
Intake	145	207	263	299	312	316	322	326
Exhaust	120	160	214	225	229	240	244	245

Specifications & Features

Material: A356 Aluminum
Intake Port Volume: 220cc
Exhaust Port Volume: 80cc
Combustion Chamber Size: 65cc
Valve Angle: 23°
Deck Thickness: .750"
Minimum Bore Diameter: 4.000"
Spark Plug Dimensions: 14mm x .750" w/Gasket Seat

Legal Disclaimer

CARB Status: These cylinder heads are not legal for use on public highways and are intended only for dedicated racing applications. Violations may result in penalties and registration revocation.