AFR 23° SBC Cylinder Head 227cc Race Ready Heads, Standard Exhaust, 65cc Chambers
AIRFLOW RESEARCH
SKU #AFR-1068
$2,592.45
AFR 23° SBC Cylinder Head 227cc Race Ready Heads, Standard Exhaust, 65cc Chambers
SKU
AFR-1068
Qty
AFR 23° SBC Cylinder Head 227cc Race Ready Heads, Standard Exhaust, 65cc Chambers
The AFR 227cc SBC Race Cylinder Head is engineered for high-performance racing applications, featuring A356 aluminum castings, 100% CNC-ported intake, exhaust, and combustion chambers, and premium components. Designed with 60/40 valve spacing, these heads require shaft mount rocker arms for optimal valvetrain geometry but can accommodate .050 offset intake rockers for drag racing applications.
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 Spring 1.550" OD Solid Roller Dual Valve Spring, 220 lbs on seat, .710" max lift (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 with lashcap recess (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)
227cc Race Ready™ Flow Chart
| Lift | .200 | .300 | .400 | .500 | .550 | .600 | .650 | .700 |
|---|---|---|---|---|---|---|---|---|
| Intake | 148 | 210 | 261 | 296 | 304 | 312 | 315 | 318 |
| Exhaust | 116 | 155 | 204 | 220 | 225 | 229 | 233 | 237 |
Specifications & Features
- Material: A356 Aluminum
- Intake Port Volume: 227cc
- Intake Port Dimensions: 2.200" H x 1.290" W, 5/16" Radius
- Intake Port Location: Stock
- Exhaust Port Volume: 80cc
- Exhaust Port Dimensions: 1.430" H x 1.540" W
- Exhaust Port Location: .250" Raised
- Combustion Chamber Size: 65cc or 75cc
- Valve Angle: 23°
- Deck Thickness: .750"
- Minimum Bore Diameter: 4.000"
- Spark Plug Dimensions: 14mm x .750" w/Gasket Seat
Important Legal Notice
THESE PRODUCTS ARE ILLEGAL TO OPERATE ON ANY PUBLIC HIGHWAY. USE IS RESTRICTED TO DEDICATED RACING VEHICLES ONLY. VIOLATION MAY RESULT IN A MAXIMUM PENALTY OF $37,500 PER VIOLATION PER VEHICLE, REVOCATION OF DMV REGISTRATION, AND LOSS OF USE ON PUBLIC ROADS.
AFR 23° SBC Cylinder Head 227cc Race Ready Heads, Standard Exhaust, 65cc Chambers
The AFR 227cc SBC Race Cylinder Head is engineered for high-performance racing applications, featuring A356 aluminum castings, 100% CNC-ported intake, exhaust, and combustion chambers, and premium components. Designed with 60/40 valve spacing, these heads require shaft mount rocker arms for optimal valvetrain geometry but can accommodate .050 offset intake rockers for drag racing applications.
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 Spring 1.550" OD Solid Roller Dual Valve Spring, 220 lbs on seat, .710" max lift (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 with lashcap recess (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)
227cc Race Ready™ Flow Chart
| Lift | .200 | .300 | .400 | .500 | .550 | .600 | .650 | .700 |
|---|---|---|---|---|---|---|---|---|
| Intake | 148 | 210 | 261 | 296 | 304 | 312 | 315 | 318 |
| Exhaust | 116 | 155 | 204 | 220 | 225 | 229 | 233 | 237 |
Specifications & Features
- Material: A356 Aluminum
- Intake Port Volume: 227cc
- Intake Port Dimensions: 2.200" H x 1.290" W, 5/16" Radius
- Intake Port Location: Stock
- Exhaust Port Volume: 80cc
- Exhaust Port Dimensions: 1.430" H x 1.540" W
- Exhaust Port Location: .250" Raised
- Combustion Chamber Size: 65cc or 75cc
- Valve Angle: 23°
- Deck Thickness: .750"
- Minimum Bore Diameter: 4.000"
- Spark Plug Dimensions: 14mm x .750" w/Gasket Seat
Important Legal Notice
THESE PRODUCTS ARE ILLEGAL TO OPERATE ON ANY PUBLIC HIGHWAY. USE IS RESTRICTED TO DEDICATED RACING VEHICLES ONLY. VIOLATION MAY RESULT IN A MAXIMUM PENALTY OF $37,500 PER VIOLATION PER VEHICLE, REVOCATION OF DMV REGISTRATION, AND LOSS OF USE ON PUBLIC ROADS.
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