Air Flow Research AFR2000 315cc Magnum Competition Ported Alloy Cylinder Heads Chev BB 396-454
AFR - Air Flow Research
AFR2000
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Air Flow Research AFR2000 315cc Magnum Competition Ported Alloy Cylinder Heads Chev BB 396-454
Item Description
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AFR 315CC MAGNUM COMPETITION PORTED ALLOY CYLINDER HEADS CHEV BB 396-454 AFR2000These heads may have the smallest intake runner volume in AFR's lineup, but don't let size fool you. Their fully CNC-ported 315cc aluminum cylinder heads will provide you with flow numbers that most medium sized heads, and some larger, can only dream about. This line was designed to optimize low and mid-lift airflow, while still generating impressive peak figures. Their application should be focused on smaller cubic inch Chevy big blocks (396-502) with a primary operating range of 2,500-6,800 rpm (this range is an average and will vary with engine displacement as well as component selection). AFR 315cc Magnum BBC heads should also be given strong consideration in larger street-driven or marine applications up to 555 c.i.d., where low-rpm power and drivability are factors. These 315 heads are extremely versatile with its incredibly strong low and mid-lift airflow figures, as well as peak numbers approaching the 400 cfm mark. These cylinder heads would be a great choice if you're looking for big torque and strong low-rpm performance and still have good rpm capabilities. They come standard with AFR's trademark 3/4 in. thick head deck, reinforced rocker stud bosses, and premium one-piece stainless steel 2.250 in. intake valves and 1.880 in. exhaust valves. Standard combustion chamber volume with AFR's fully CNC-ported 315cc version comes with a 121cc chamber. These heads are available with an optional 114cc combustion chamber as well. Specs: Application: Chev Big Block Mark IV 396-454 C.I.D. & Gen V 454 C.I.D.Cylinder Head Style: Assembled Cylinder Head Material: Aluminum Cylinder Head Finish: Natural Combustion Chamber Volume (cc): 121 CNC-Machined Combustion Chamber: Yes Intake Runner Volume (cc): 315cc Exhaust Runner Volume (cc): 124cc 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: Round Exhaust Port Location: Standard Intake Valves Included: Yes Intake Valve Diameter (in): 2.250 in. Exhaust Valves Included: Yes Exhaust Valve Diameter (in): 1.880 in. Valve Springs Included: Yes Maximum Valve Lift (in): 0.750 in. Outside Diameter of Outer Spring (in): 1.625 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 Valve Cover Mounting Style: Perimeter bolt Accessory Bolt Holes Drilled: Yes Intake Valve Angle: 24/4 Exhaust Valve Angle: 15/4 Valve Guides Included: Yes Valve Guide Material: Bronze Valve Seats Machined: Yes Valve Seat Machine Style: 5-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: 1 in. longer head bolts required on the four bottom exhaust bolt holes. These cylinder heads are competition ported. |
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- Manufacturer: AFR - Air Flow Research
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