AFR 23° SBC Cylinder Head 210cc Race Ready Heads, Standard Exhaust, 65cc Chambers

AFR 23° SBC Cylinder Head 210cc Race Ready Heads, Standard Exhaust, 65cc Chambers

AFR’s 210cc “Race Ready” cylinder heads are engineered for high-performance racing and aggressive street/strip builds up to 400 cubic inches, delivering exceptional airflow and durability. Designed to operate efficiently up to 6500-6800 RPM, these heads feature 100% CNC ported intake, exhaust, and combustion chambers, utilizing A356 aluminum castings for superior strength and precision. The Standard Exhaust configuration enhances exhaust flow, improving overall engine performance.

Specifications & Features

• Material: A356 Aluminum
• Intake Port Volume: 210cc
• Intake Port Dimension: 2.200″ H x 1.310″ W x 3/8 Radius
• Intake Port Location: Stock
• Exhaust Port Volume: 80cc
• Exhaust Port Dimension: 1.420″ H x 1.545″ W
• Exhaust Port Location: .250″ Raised
• Combustion Chamber Size: 65cc
• Valve Angle: 23°
• Deck Thickness: .750″
• Minimum Bore Diameter: 4.000″
• Spark Plug Dimensions: 14mm x .750″ w/Gasket Seat

Included Components

• 100% CNC Ported Combustion Chambers
• 100% CNC Ported Intake & Exhaust Ports
• Competition 5-angle Valve Job
• 8mm Bead Lock Intake Valve (2.080″ x 5.000″) – AFR #7255
• 8mm Bead Lock Exhaust Valve (1.600″ x 5.030″) – AFR #7254
• PAC Racing Spring 1.550″ OD Solid Roller Dual Valve Spring (Max Lift .710″) – AFR #8000
• 10° Steel Retainers – AFR #8511
• 10° Bead Lock Valve Keepers – AFR #9009
• ARP 7/16″ Rocker Studs – AFR #6405
• Adjustable 5/16″ Guide Plates – AFR #6103
• Viton Valve Seals – AFR #6612
• Ductile Iron Intake & Exhaust Valve Seats – AFR #9060 / AFR #9070
• 8mm Bronze Valve Guides – AFR #9051

Flow Data

Performance & Compatibility

The AFR 23° SBC 210cc Race Ready Heads are optimized for race and high-performance street applications, offering outstanding airflow and durability. Designed for use with aggressive cam profiles and larger displacement engines, these heads support up to 7200-7400 RPM with proper valvetrain components.

Legal Disclaimer

CARB Status: This product is not legal for sale or use on emission-controlled vehicles and is intended for dedicated race vehicles only.