Brand: Airflow Research (AFR)
Manufacturer's Part Number: 3620
Part Type: Cylinder Heads
Product Line: AFR 265cc Oval Port Magnum BBC Cylinder Heads
Automotive Fittings Part Number: AFR-3620
Combustion Chamber Volume (cc): 109
Intake Runner Volume (cc): 265cc
Exhaust Runner Volume (cc): 132cc
Cylinder Head Style: Assembled
Cylinder Head Material: Cast aluminum
Intake Port Shape: Oval
Intake Valve Diameter (in.): 2.190 in.
CNC-Machined Combustion Chamber: Yes
CNC-Machined Intake Runner: Yes
CNC-Machined Exhaust Runner: Yes
Combustion Chamber Style: Heart
Intake Port Location: Standard
Exhaust Port Shape: Round
Exhaust Port Location: Raised
Intake Valves Included: Yes
Exhaust Valves Included: Yes
Exhaust Valve Diameter (in.): 1.880 in.
Valve Springs Included: Yes
Maximum Valve Lift (in.): 0.710 in.
Camshaft Style: Solid roller
Outside Diameter of Outer Spring (in.): 1.550 in.
Damper Spring Included: Yes
Number of Springs Per Valve: Single
Retainers Included: Yes
Retainer Material: Steel
Locks Included: Yes
Lock Style: 10 degree
Valve Stem Seals Included: Yes
Valve Stem Seal Style: Positive stop
Rocker Arm Studs Included: Yes
Rocker Arm Nut Thread Size: 7/16 in.-20
Rocker Arms Included: No
Rocker Arm Nuts Included: No
Guideplates Included: Yes
Guideplate Pushrod Size: 3/8 in.
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
Cylinder Head Color: Natural
Steam Holes Drilled: No
Oiling Style: Through pushrod
Machined for O-Ring: No
Heat Crossover: Yes
Remanufactured: No
Quantity: Sold as a pair.
Notes: Features partially CNC machined chambers, bowl blend, and runners with solid roller valve springs.
Description:
AFR 265cc Oval Port Magnum BBC cylinder heads are designed to be used on engine displacement up to 468 cu. in. operating at or below 6,200 rpm—providing tons of bottom-end torque, tremendous throttle response, and great all-around power. Recommended for street, strip, or towing applications, these torque monsters can flow 354 cfm at 0.650 in. lift. These units feature a 3/4 in. thick deck, along with reinforced rocker stud bosses, and thick, rugged castings. Want high-flowing power? Then choose these 265cc Oval Port Magnum BBC cylinder heads from AFR.

Additional features include:

* Intake runners and exhaust ports are partially CNC-machined
* Competition 5-angle valve job
* 3/8 in. guideplates
* A356 aluminum material