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AFR - Airflow Research 3650

AFR - Airflow Research 290cc Oval Port 24° Magnum Street/Strip Aluminum Cylinder Heads BB-Chevy

033-3650

made in usa
Free Shipping Ships directly from the manufacturer on 10/30/19
Save $10 off $199, $45 off $499, $100 off $999. Promo Code: FALLFUN exclusions apply

$3,074.00
AFR - Airflow Research 290cc Oval Port 24° Magnum Street/Strip Aluminum Cylinder Heads BB-Chevy $3,074.00
Out of stock
QTY
290cc Oval Port 24° Magnum Street/Strip Aluminum Cylinder Heads
  • BB-Chevy
  • 113cc Combustion Chambers
  • PAC Racing 1.550'' Solid Roller Valve Spring
  • Assembled
  • Sold in Pairs, 2/pkg.
  • AFR - Airflow Research 3650 Details

    Big Block Chevy 290cc Oval Port 24° Magnum Basic Package Components
    100% CNC Ported Combustion Chambers
    100% CNC Ported Exhaust Ports
    100% CNC Ported Intake Ports
    Competition 5-Angle Valve Job
    Intake Valve, 2.250'' x 5.500'' Overall Length
    Exhaust Valve, 1.880'' x 5.448'' Overall Length
    PAC Racing 1.550'' OD Solid Roller Valve Spring, 225 lbs. on seat, .680'' maximum lift, max RPM 7200-7400
    10º Manley 4140 Chrome Moly Retainers
    10º Valve Locks
    7/16'' Rocker Studs
    Adjustable 3/8'' Guide Plates
    Viton Valve Seals
    Hardened Spring Seat
    Intake Valve Seats
    Exhaust Valve Seats
    Bronze Valve Guides
    Big Block Chevy 290cc Oval Port 24° Magnum Street Head Specifications
    Head Torque w/Moly Lube 75 Ft. Lbs.
    Rocker Stud Torque 55 Ft. Lbs.
    Intake Port Gasket Fel-Pro 375-1212 - DO NOT PORT MATCH Intake Manifold to Fel-Pro Gasket.
    Exhaust Port Gasket AFR 033-6858
    Head Gasket 4.540'' Bore, Fel Pro 375-1017
    AFR 033-6850
    Head Bolts & Studs Standard ARP
    Head Bolt Washers Manley Standard
    Stud Girdle AFR 033-6210
    Suggested Manifold Weiand Stealth or Edelbrock Vic Jr. or RPM Performer
    Spark Plug Starting Range Autolite 3935
    Combustion Chambers 113cc As Cast
    Intake Port Volume 290cc As Cast
    Exhaust Port Volume N/A
    Spring Pocket can be cut to 1.750, no deeper.
    Valve Spacing Standard
    Rocker Arms Standard
    Valve Angle 24° / 4° Intake ; 15° / 4° Exhaust
    Angle Mill, 97cc Maximum .009'' per cc
    Flat Mill, 102cc Maximum .006'' per cc
    NOTE: Flat and Angle mills might require a .120'' thick head gasket.

    Specifications:

    Quantity
    Sold as a pair
    Cylinder Head Style
    Assembled
    Guideplates Included
    Yes
    Rocker Arm Studs Included
    Yes
    Accessory Bolt Holes Drilled
    Yes
    Cylinder Head Finish
    Natural
    Cylinder Head Material
    Aluminum
    CNC-Machined Combustion Chamber
    Yes
    CNC-Machined Exhaust Runner
    Yes
    CNC-Machined Intake Runner
    Yes
    Damper Spring Included
    Yes
    Exhaust Valves Included
    Yes
    Heat Crossover
    No
    Intake Valves Included
    Yes
    Locks Included
    Yes
    Machined for O-Ring
    No
    Retainers Included
    Yes
    Rocker Arm Nuts Included
    No
    Rocker Arms Included
    No
    Steam Holes Drilled
    No
    Valve Guides Included
    Yes
    Valve Seats Machined
    Yes
    Valve Springs Included
    Yes
    Valve Stem Seals Included
    Yes
    Combustion Chamber Volume (cc)
    112
    Intake Port Location
    Standard
    Exhaust Port Location
    Raised
    Oiling Style
    Through pushrod
    Intake Valve Diameter (in.)
    2.25
    Exhaust Valve Diameter (in.)
    1.88
    Valve Guide Material
    Bronze
    Intake Runner Volume (cc)
    290
    Valve Seat Material
    Ductile iron
    Valve Cover Mounting Style
    Perimeter bolt
    Intake Valve Angle
    24/4
    Valve Seat Machine Style
    3-angle
    Outside Diameter of Outer Spring (in.)
    1.625
    Maximum Valve Lift (in.)
    0.85
    Number of Springs Per Valve
    Dual
    Retainer Material
    Chromoly steel
    Lock Style
    10 degree
    Exhaust Valve Angle
    15/4
    Combustion Chamber Style
    Heart
    Rocker Arm Nut Thread Size (in.)
    7/16"-20
    Manufacturer's Part Number:
    3650
    Shipping Weight:
    94.4
    Package Height:
    19.6
    Package Depth:
    23.9
    Package Width:
    10

    AFR's Medium Sized Oval Port
    Big Block Chevy Powerhouse!

    For incredible in ''Oval Port'' performance, the fully CNC ported AFR 290 has no competition. With flow figures most small to medium sized rectangular port castings would be envious of, these high flowing ''Ovals'' produce tremendous airspeed and really pack a punch. Ideally suited for 396-509ci street and strip performance, as well as circle track applications which require strong low and mid-range torque to help accelerate a car coming off a corner. Once again, AFR has included it's trademark 3/4'' deck, reinforced rocker stud bosses, and thick rugged castings, so you can own the strongest and most efficient heads on the market today. Premium hardware such as 2.250'' / 1.880'' one-piece stainless valves, 1.550'' double springs, 10-degree locks and retainers, and high quality studs and guideplates all come as standard equipment. Take note the higher flowing exhaust ports and bolt pattern are raised .375'' (3/8'') over stock location, this rarely affects chassis fitment. These heads have no EGR and are not emissions legal. .

    Installation Notes: Optional stud girdle required for 2° rolled valve angles and 1'' longer head bolt needed on four bottom exhaust bolt holes.

    290cc Oval Port Magnum Street Cylinder Head Features:
  • 100% CNC Ported Combustion Chambers
  • 100% CNC Ported Exhaust Ports
  • 100% CNC Ported Intake Ports
  • Competition 5-angle Valve Job
  • 290cc Intake Ports
  • Intake Valve, 2.250'' x 5.500'' Overall Valve Length
  • Exhaust Valve, 1.880'' x 5.448'' Overall Valve Length
  • Hydraulic Roller Valve Spring: 1.550'' OD Hydraulic Roller Dual Valve Spring, 170 lbs on seat, 473 lbs @ .600'' maximum lift
  • Solid Roller Valve Spring: 1.550'' OD PAC Racing Solid Roller Valve Spring, 225 lbs on seat, .680'' maximum lift
  • 10° Manley 4140 Chrome Moly Retainers
  • 10° Valve Locks
  • 7/16'' Rocker Studs
  • Adjustable 3/8'' Guide Plates
  • Viton Valve Seals
  • Hardened Spring Seats
  • Intake Valve Seats
  • Exhaust Valve Seats
  • Bronze Valve Guides

  • Some parts are not legal for use in California or other states with similar laws / regulations

    Motor Vehicles

    WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.

    Tools:

    WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.

    Electrical Cords

    WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.