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Airflow Research Magnum Series Aluminum Chev BB Head
New highly efficient port designs, an exclusive new combustion chamber provides impressive swirl figures and generates big low and midlift airflow figures. 3/4" thick decks, reinforced rocker bosses, and thick wall runners provide unparalleled durability.
Assemblies include stainless steel valves, 1.625" dual springs (.850" max lift), 10 degree retainers and locks, 7/16" rocker studs and guide plates.
Part Type: Cylinder Head
Application: Chevrolet Big Block
Cylinder Head Material: Aluminum
Bare or Assembled: Assembled
Combustion Chamber Size: 117cc
CNC Machined Combustion Chambers: No
Intake Valve Angle: 24
Exhaust Valve Angle: 24
Intake Port Volume: 305cc
CNC Machined Intake Port: No
Intake Port Flow: 368 cfm @ .650" Lift/ 28"
Intake Port Location: Standard
Intake Port Shape: Rectangular
Intake Port Dimensions: 2.380" x 1.680"
Suggested Intake Gaskets: Fel-Pro 1275 or Equivalent
Exhaust Port Volume: 132cc
CNC Machined Exhaust Port: No
Exhaust Port Flow: 268 cfm @ .650" Lift/ 28"
Exhaust Port Location: Raised .375"
Exhaust Port Shape: D-Shaped
Exhaust Port Dimensions: 1.780" x 2.025"
Suggested Exhaust Gaskets: Fel-Pro 1412 or Equivalent
Spark Plug Style:
Suggested Spark Plug: 14mm, .750 reach
Valve Guides: Yes
Valve Guide Spacing:
Valve Stem Diameter: 11/32" (.3415")
Valve Seats: Yes
Valve Job: 5-Angle
Intake Valve Diameter: 2.250"
Intake Valve Included: Yes
Exhaust Valve Diameter: 1.880"
Exhaust Valve Included: Yes
Suggested Valve Length:
Valve Spring Pockets: May be cut up to 1.625" MAX.
Valve Springs Included: Yes, 1.625" Dual
Valve Spring Application: Mechanical Roller, 275lbs. Seat, .850" 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
Valve Cover Mounting Style: Perimeter Bolt
Steam Holes Drilled: No
Heat Crossover: No
Suggested Head Bolts: ARP 135-3703 (Mark IV) ARP 135-3707 (Mark V)
Suggested Head Studs: ARP 235-4713
Suggested Stud Girdle:
Head Bolt Torque with Oil: 75 ft./lbs.
Rocker Stud Torque with Oil: 55-60 ft./lbs.
Intake Bolt Torque with Oil:
Manufacturer: Airflow Research
Manufacturer's Part Number: 2100
Weight:
Warranty: Race Application, No warranty expressed or implied
Quantity: Sold as Pair
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