Airflow Research 220cc SBF Competition Cylinder Heads

AFR Part #: 1451
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Are you looking for the largest, best flowing AFR heads to top your small block Ford? Then that would be their 220cc SBF Renegade 20 degree competition package heads. These power-producing cylinder heads are born of A356 aluminum castings and feature intake ports, exhaust ports, and combustion chambers that are all 100 percent CNC-ported. Renegades are outfitted with lightweight 8mm, 2.100 in. intake valves and 1.570 in. exhaust valves to move massive amounts of air. They come with either combustion chamber volumes of 58 or 72cc accompanied by 70cc exhaust ports, which are raised .375 in. higher than stock. Plus, AFR's trademark 3/4 in. thick cylinder head deck makes them ideal for heavy nitrous or blower applications. Choose the flow characteristics that can give your Ford the power to win--AFR 220cc SBF Renegade 20 degree competition heads.

Specifications:

Cylinder Head Style: Assembled
Cylinder Head Material: Aluminum
Cylinder Head Finish: Natural
Combustion Chamber Volume (cc): 58
CNC-Machined Combustion Chamber: Yes
Intake Runner Volume (cc): 220cc
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): 1.570 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: 20
Exhaust Valve Angle: 20
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: Exhaust ports are raised 0.375 in. higher than stock. These cylinder heads are race ported.