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