AFR 23° SBC Cylinder Head 210cc Competition Package Heads, Standard Exhaust, 65cc chambers

AFR 23° SBC Cylinder Head 210cc Competition Package Heads, Standard Exhaust, 65cc Chambers

AFR’s 210cc Competition Package Cylinder Heads are built for high-performance race and aggressive street/strip applications up to 400 cubic inches, operating at 6500-6800 RPM. These heads feature 100% CNC ported intake, exhaust, and combustion chambers, ensuring maximum airflow and efficiency. Manufactured with premium A356 aluminum castings, they deliver top-tier durability and performance.

Key Features

• Chamber Size: 65cc
• Porting Finish: Competition CNC Ported
• Material: A356 Aluminum
• Intake Port Volume: 210cc
• Exhaust Port Volume: 80cc
• Valve Angle: 23°
• Deck Thickness: .750″
• Minimum Bore Diameter: 4.000″

Included Components

• 100% CNC Ported Combustion Chambers, 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, 220 lbs seat pressure, .710″ max lift) – 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
• Hardened Valve Spring I.D. Locator – AFR #8048
• Ductile Iron Intake Valve Seats – AFR #9060
• Ductile Iron Exhaust Valve Seats – AFR #9070
• 8mm Bronze Valve Guides – AFR #9051

Performance Flow Data

*Flow data was tested at 28″ of water pressure using a Superflow 1020 with a bore size of 4.060″.*

CARB Compliance

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