Air Flow Research AFR1065 Airflow Research 220cc Chev SB Eliminator Racing Cylinder Heads -

These race-ready AFR 220cc SBC Eliminator racing heads feature 100 percent CNC-ported intakes with greater detail. They also come with 100 percent CNC-ported combustion chambers and 80cc exhaust ports with a 3/4 in. thick head deck (ideal for nitrous or blower applications). Standard valves are lightweight 8mm, 2.080 in. intakes and 1.600 in. exhausts with AFR's hardened ductile iron interlocking valve seats. The valve springs included are intended for use on roller camshafts. They also offer exceptional flow characteristics, a 23 degree valve angle, and standard valve spacing. They are perfect for 350 to 400 c.i.d. engines in bracket drag cars, sportsman oval trackers, and highly modified street-class cars operating between 3,000 and 7,500 rpm (higher rpm ranges are possible, depending on the combination of parts).

• Cylinder Head Style:Assembled
• Cylinder Head Material:Aluminum
• Cylinder Head Finish:Natural
• Combustion Chamber Volume (cc):65
• 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:Standard
• 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:Race ready porting. Cylinder heads are based on L98 geometry, not compatible with self-aligning rocker arms. Exhaust port is raised 0.250 in. over stock.