AFR 23° SBC Cylinder Head 210 Competition Package Heads, Spread Port Exhaust, 75cc Chambers

AFR 23° SBC Cylinder Head 210 Competition Package Heads, Spread Port Exhaust, 75cc Chambers

AFR's 210cc "Race Ready" and "Competition" cylinder heads offer 100% CNC-ported intake, exhaust, and combustion chambers. Built with A356 aluminum castings and high-quality components, these heads are engineered for race applications and aggressive street/strip builds up to 400 cubic inches, with an operating range of 6500-6800 RPM.

Specifications & Features

• Material: A356 Aluminum
• Combustion Chamber Size: 75cc
• Intake Port Volume: 210cc
• Exhaust Port Volume: 80cc
• Valve Angle: 23°
• Spread Port: Yes
• Deck Thickness: 0.750"
• Minimum Bore Diameter: 4.000"
• Spark Plug Dimensions: 14mm x 0.750" w/Gasket Seat
• CARB Status: Not legal for sale or use on emission-controlled vehicles; for dedicated race vehicles only.

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, 2.080" 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 (AFR #8000)
• 10° Steel Retainers 1.500" O.D x 1.120" I.D x .705" I.D (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 .600" O.D x .495" I.D (AFR #6612)
• Hardened Valve Spring I.D Locator 1.550” O.D x .780” I.D (AFR #8048)
• Ductile Iron Intake Valve Seats 2.200" O.D x 1.750" I.D x .375" Deep (AFR #9060)
• Ductile Iron Exhaust Valve Seats 1.696" O.D x 1.325" I.D x .305" Deep (AFR #9070)
• 8mm Bronze Valve Guides .502" O.D x 2.100" O.A.L (AFR #9051)

Performance Flow Data

AFR’s 210cc Competition heads provide superior airflow, optimizing engine performance for high RPM applications.

Performance & Compatibility

Designed for high-performance racing and aggressive street/strip builds, these heads optimize airflow and combustion efficiency for maximum horsepower and torque in engines up to 400 cubic inches.