AFR Enforcer Aluminum Cylinder Heads These cylinder heads feature AFR's Permanent Mold "As-Cast" Technology surfaces on the intake runners, exhaust runners, and combustion chambers that allows for extremely accurate and repeatable port location/performance. This budget friendly head is perfect for your 350 to 400 cubic inch operating below 6000 RPM.
Part Type: Cylinder Head Application: Ford Small Block Cylinder Head Material: A356 Aluminum Bare or Assembled: Assembled Combustion Chamber Size: 64cc CNC Machined Combustion Chambers: No Intake Valve Angle: 20 Exhaust Valve Angle: 20 Intake Port Volume: 185cc CNC Machined Intake Port: No Intake Port Flow: 260 cfm @ .600" Lift/ 28 Intake Port Location: Standard Intake Port Shape: Rectangular Intake Port Dimensions: 2.010" H x 1.070" x 5/16 Radius Suggested Intake Gaskets: Exhaust Port Volume: 64cc CNC Machined Exhaust Port: No Exhaust Port Flow: 170 cfm @ .600" Lift/ 28 Exhaust Port Location: Standard Exhaust Port Shape: Square Exhaust Port Dimensions: 1.370" x 1.350" Suggested Exhaust Gaskets: Spark Plug Style: Angle Suggested Spark Plug: 14mm x .750" Valve Guides: Yes Valve Guide Spacing: Valve Stem Diameter: 8mm Valve Seats: Yes (Ductile Iron) Valve Job: 3-Angle Intake Valve Diameter: 2.020" Intake Valve Included: Yes Exhaust Valve Diameter: 1.600" Exhaust Valve Included: Yes Suggested Valve Length: Intake: 5.000"/Exhaust: 5.030" Valve Spring Pockets: 1.540" O.D. (Max 1.600" O.D.) Valve Springs Included: Yes, 1.290" Dual Valve Spring Application: Hydraulic Roller, 140lbs. Seat, .600" Max Lift Valve Springs Retainers Included: Yes Valve Locks Included: Yes (7 Degree) Valve Seals Included: Yes Rocker Studs Included: Yes (3/8") Guide Plates Included: Yes (5/16") Valve Cover Mounting Style: Perimeter Steam Holes Drilled: No Heat Crossover: No Suggested Head Bolts: Suggested Head Studs: Suggested Stud Girdle: Head Bolt Torque with Oil: Rocker Stud Torque with Oil: Intake Bolt Torque with Oil: Manufacturer: Airflow Research Manufacturer's Part Number: 1351 Weight: https://www.airflowresearch.com/warranty/ Warranty: Race Application, No warranty expressed or implied Quantity: Sold as Each
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