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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: Chevrolet Big Block
Cylinder Head Material: A356 Aluminum
Bare or Assembled: Assembled
Combustion Chamber Size: 122cc
CNC Machined Combustion Chambers: No
Intake Valve Angle: 24/4
Exhaust Valve Angle: 15/4
Intake Port Volume: 325cc
CNC Machined Intake Port: No
Intake Port Flow: 355 cfm @ .700" Lift/ 28
Intake Port Location: Standard
Intake Port Shape: Rectangular
Intake Port Dimensions: 2.510" H x 1.820" x 3/8 Radius
Exhaust Port Volume: 140cc
CNC Machined Exhaust Port: No
Exhaust Port Flow: 255 cfm @ .700" Lift/ 28
Exhaust Port Location: Standard
Exhaust Port Shape: Rectangular
Exhaust Port Dimensions: 1.690" x 1.900"
Spark Plug Style: Angle
Suggested Spark Plug: 14mm x .750"
Valve Guides: Yes
Valve Stem Diameter: 11/32"
Valve Seats: Yes (Ductile Iron)
Valve Job: 3-Angle
Intake Valve Diameter: 2.250"
Intake Valve Included: Yes
Exhaust Valve Diameter: 1.880"
Exhaust Valve Included: Yes
Suggested Valve Length: Intake: 5.500"/Exhaust: 5.450"
Valve Spring Pockets: 1.750" O.D. (Do not machine spring pad any deeper!)
Valve Springs Included: Yes, 1.550" Dual
Valve Spring Application: Hydraulic Roller, 175lbs. Seat, .725" Max Lift
Valve Springs Retainers Included: Yes
Valve Locks Included: Yes (10 Degree)
Valve Seals Included: Yes
Rocker Studs Included: Yes (7/16")
Guide Plates Included: Yes (3/8")
Valve Cover Mounting Style: Perimeter
Steam Holes Drilled: No
Heat Crossover: No
Suggested Head Bolts: ARP135-3703 (Gen IV), ARP135-3707 (Gen V)
Suggested Head Studs: ARP235-4713
Manufacturer: Airflow Research
Manufacturer's Part Number: 3001
Weight: N/A
Warranty: https://www.airflowresearch.com/warranty/
Quantity: Sold as Each
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