Description
AFR 457cc Magnum BBC 18 degree cylinder heads were built specifically for high horsepower race applications. The Magnum 18 heads flow an impressive 498 cfm at 1.000 in. lift with 457cc runners, 90cc combustion chamber, and 143cc exhaust. The intake ports are raised .500 in. with the valves rolled to 18 degree, resulting in unparalleled under-the-curve flow numbers. These big block Chevy heads are ideal for 540 cu. in. or larger race engines. AFR has been defining what it means to make power on Chevy engines for years. Now you can strap on a pair of their best performing, highest flowing heads, their 457cc Magnum BBC 18 degree cylinder heads.Brand: Airflow Research (AFR)
Manufacturer's Part Number: 3707
Part Type: Cylinder Heads
Product Line: AFR 457cc Magnum BBC 18 Degree Cylinder Heads
HP Direct Part Number: AFR-3707
Combustion Chamber Volume (cc): 96
Intake Runner Volume (cc): 457cc
Exhaust Runner Volume (cc): 143cc
Cylinder Head Style: Bare
Cylinder Head Material: Cast aluminum
Intake Port Shape: Rectangular
Intake Valve Diameter (in.): 2.400 in.
CNC-Machined Combustion Chamber: Yes
CNC-Machined Intake Runner: Yes
CNC-Machined Exhaust Runner: Yes
Combustion Chamber Style: Open chamber
Intake Port Location: Raised
Exhaust Port Shape: Round
Exhaust Port Location: Raised
Intake Valves Included: No
Exhaust Valves Included: No
Exhaust Valve Diameter (in.): 1.800 in.
Valve Springs Included: No
Damper Spring Included: No
Retainers Included: No
Locks Included: No
Valve Stem Seals Included: No
Rocker Arm Studs Included: No
Rocker Arms Included: No
Rocker Arm Nuts Included: No
Guideplates Included: No
Accessory Bolt Holes Drilled: Yes
Intake Valve Angle: 18
Valve Guides Included: Yes
Valve Guide Material: Manganese bronze
Valve Seats Machined: Yes
Valve Seat Machine Style: 5-angle intake/3-angle exhaust
Valve Seat Material: Ductile iron
Cylinder Head Color: Natural
Steam Holes Drilled: No
Oiling Style: Through head
Machined for O-Ring: No
Heat Crossover: No
Remanufactured: No
Quantity: Sold individually.
Manufacturer's Part Number: 3707
Part Type: Cylinder Heads
Product Line: AFR 457cc Magnum BBC 18 Degree Cylinder Heads
HP Direct Part Number: AFR-3707
Combustion Chamber Volume (cc): 96
Intake Runner Volume (cc): 457cc
Exhaust Runner Volume (cc): 143cc
Cylinder Head Style: Bare
Cylinder Head Material: Cast aluminum
Intake Port Shape: Rectangular
Intake Valve Diameter (in.): 2.400 in.
CNC-Machined Combustion Chamber: Yes
CNC-Machined Intake Runner: Yes
CNC-Machined Exhaust Runner: Yes
Combustion Chamber Style: Open chamber
Intake Port Location: Raised
Exhaust Port Shape: Round
Exhaust Port Location: Raised
Intake Valves Included: No
Exhaust Valves Included: No
Exhaust Valve Diameter (in.): 1.800 in.
Valve Springs Included: No
Damper Spring Included: No
Retainers Included: No
Locks Included: No
Valve Stem Seals Included: No
Rocker Arm Studs Included: No
Rocker Arms Included: No
Rocker Arm Nuts Included: No
Guideplates Included: No
Accessory Bolt Holes Drilled: Yes
Intake Valve Angle: 18
Valve Guides Included: Yes
Valve Guide Material: Manganese bronze
Valve Seats Machined: Yes
Valve Seat Machine Style: 5-angle intake/3-angle exhaust
Valve Seat Material: Ductile iron
Cylinder Head Color: Natural
Steam Holes Drilled: No
Oiling Style: Through head
Machined for O-Ring: No
Heat Crossover: No
Remanufactured: No
Quantity: Sold individually.
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