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AFR 227cc SBC Eliminator Competition Racing Heads 1121

Airflow Research (AFR) 1121 - AFR 227cc SBC Eliminator Competition Racing Heads

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Cylinder Heads, Competition Porting, Aluminum, Assembled, 65cc Chamber, 227cc Intake, Chevy, Small Block, Pair

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Brand: Airflow Research (AFR)

Manufacturer's Part Number: 1121

Part Type: Cylinder Heads

Product Line: AFR 227cc SBC Eliminator Competition Racing Heads

Summit Racing Part Number: AFR-1121

Cylinder Head Style: Assembled

Cylinder Head Material: Aluminum

Cylinder Head Finish: Natural

Combustion Chamber Volume (cc): 68

CNC-Machined Combustion Chamber: Yes

Intake Runner Volume (cc): 227cc

Exhaust Runner Volume (cc): 80cc

CNC-Machined Intake Runner: Yes

CNC-Machined Exhaust Runner: Yes

Combustion Chamber Style: Heart

Intake Port Shape: Rectangular

Intake Port Location: Standard

Exhaust Port Shape: Square

Exhaust Port Location: Raised

Spark Plug Style: Angle

Intake Valves Included: Yes

Intake Valve Diameter (in): 2.100 in.

Exhaust Valves Included: Yes

Exhaust Valve Diameter (in): 1.600 in.

Valve Springs Included: Yes

Maximum Valve Lift (in): 0.710 in.

Outside Diameter of Outer Spring (in): 1.550 in.

Damper Spring Included: Yes

Number of Springs Per Valve: Dual

Retainers Included: Yes

Retainer Material: Chromoly steel

Locks Included: Yes

Lock Style: 10 degree

Valve Stem Seals Included: Yes

Rocker Arm Studs Included: Yes

Rocker Arm Nut Thread Size: 7/16-20 in.

Rocker Arms Included: No

Rocker Arm Nuts Included: No

Guideplates Included: Yes

Guideplate Pushrod Size: 5/16 in.

Valve Cover Mounting Style: Perimeter bolt

Accessory Bolt Holes Drilled: Yes

Intake Valve Angle: 23

Exhaust Valve Angle: 23

Valve Guides Included: Yes

Valve Guide Material: Bronze

Valve Seats Machined: Yes

Valve Seat Machine Style: 3-angle

Valve Seat Material: Ductile iron

Steam Holes Drilled: No

Oiling Style: Through pushrod

Machined for O-Ring: No

Heat Crossover: No

Quantity: Sold as a pair.

Notes: 60/40 Valve Spacing ,not compatible with self-aligning rocker arms. .050 Off-set or shaft mount rocker arms recommended for optimized Geometry. Exhaust port is raised 0.250 in. over stock. These cylinder heads are competition ported. Valve springs are designed for mechanical roller camshafts.

In-Store Pickup: Choose In-store pick-up (OH, GA, NV) on our web site.

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You'll be the baddest thing on four wheels with AFR 227cc SBC Eliminator Competition Racing heads. These Competition package heads kick up your power production. Intake ports, exhaust ports and cylinder heads are 100 percent CNC-ported with finer machine levels and improved port shaped details for optimum flow characteristics. Proudly made in the USA, these AFR 227cc SBC Eliminator heads have a 3/4 in. thick head deck ideal for nitrous or blower applications and come complete and ready to run with AFR power-proven components for ultimate power and reliability. Or, choose "bare" heads (no parts) to design your own ultimate power package. These heads are available in standard and spread port exhaust. Bolt on performance--AFR 227cc SBC Eliminator Competition Racing heads.

Warranty

Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles

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