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AFR - Airflow Research 235cc Eliminator Race Aluminum Cylinder Heads SB-Chevy

AFR - Airflow Research 1132NP


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Estimated to ship directly from the manufacturer on 08/27/18
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AFR - Airflow Research 235cc Eliminator Race Aluminum Cylinder Heads SB-Chevy $2,134.97
235cc Eliminator Race Aluminum Cylinder Heads
  • SB-Chevy
  • Competition Package CNC Porting
  • 70cc Combustion Chambers
  • Standard Exhaust Port Configuration
  • Angle Spark Plug
  • Bare Head Only
  • Sold in Pairs, 2/pkg.

  • AFR - Airflow Research 1132NP Details

    Competition Package CNC Porting Eliminator Heads

  • Standard Exhaust Port Configuration

    This is an unassembled bare cylinder head with valve guides and valve seats installed only. Does not include any parts such as valves, springs, spring components, studs or guideplates.

    Small Block Chevy 235cc Eliminator Race 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 Size - 2.125'' (Valve not included)
    Exhaust Valve Size - 1.600'' (Valve not included)
    Intake Valve Seats
    Exhaust Valve Seats
    Bronze Valve Guides
    Small Block Chevy 235cc Eliminator Race Head Specifications
    Head Torque w/Moly Lube 65-70 Ft. Lbs.
    Rocker Stud Torque 55 Ft. Lbs.
    Intake Port Gasket, 1.310'' x 2.180'' w/ 3/8'' radius Fel-Pro 375-1206 - DO NOT PORT MATCH Intake Manifold to Fel-Pro Gasket.
    Exhaust Port Gasket Fel Pro 375-1405
    Head Gasket 350ci Fel Pro 375-1004
    400ci Fel Pro 375-1014
    Head Bolts & Studs Standard ARP
    Head Bolt Washers Manley Standard
    Stud Girdle AFR Offset 033-6208
    Suggested Manifold AFR p/n 033-4801, AFR p/n 033-4802 or Edelbrock Vic Jr p/n 350-2975 or Super Victor p/n 350-2925
    Spark Plug Starting Range Autolite 3910
    Combustion Chambers 70cc
    Intake Port 235cc
    Exhaust Port 80cc+
    Spring Pocket can be cut to 1.680, no deeper.
    Valve Spacing 60/40
    Rocker Arms .450'' Offset / Shaft Mount
    Valve Angle 23°
    Angle Mill .008'' per cc
    Flat Mill .006'' per cc
    NOTE: Flat and Angle mills might require a .120'' thick head gasket.

  • Specifications:

    Accessory Bolt Holes Drilled
    CNC-Machined Combustion Chamber
    CNC-Machined Exhaust Runner
    CNC-Machined Intake Runner
    Combustion Chamber Style
    Combustion Chamber Volume (cc)
    Cylinder Head Finish
    Cylinder Head Material
    Cylinder Head Style
    Damper Spring Included
    Exhaust Port Location
    Exhaust Port Shape
    Exhaust Runner Volume (cc)
    Exhaust Valve Diameter (in.)
    Exhaust Valves Included
    Guideplates Included
    Heat Crossover
    Intake Port Location
    Intake Port Shape
    Intake Runner Volume (cc)
    Intake Valve Angle
    Intake Valve Diameter (in.)
    Intake Valves Included
    Locks Included
    Machined for O-Ring
    Oiling Style
    Through pushrod
    Sold as a pair
    Retainers Included
    Rocker Arm Nuts Included
    Rocker Arm Studs Included
    Rocker Arms Included
    Spark Plug Style
    Steam Holes Drilled
    Valve Cover Mounting Style
    Perimeter bolt
    Valve Guide Material
    Valve Guides Included
    Valve Seat Machine Style
    Valve Seat Material
    Ductile iron
    Valve Seats Machined
    Valve Springs Included
    Valve Stem Seals Included
    Manufacturer's Part Number:

    Raised Runner Performance from a Standard Location Port SB-Chevy 60/40 Head

    With the price of big displacement SBC engines fraction of what they were years ago, the allure to go BIG is stronger than ever. To help quench the thirst of that large displacement monster AFR is proud to offer our largest direct bolt on 23° Chevy head yet. At 235cc's, any small block under 400 cubic inches can just look the other way. It has the same geometry as AFR's 227cc head and will accept all the same rocker arms, stud girdles, etc. AFR offset stud girdles are the only special parts required. Requires shaft mount rockers or .050'' offset intake rocker arm for durability and reliability of valve train components. With the .050'' offset the intake rocker arm will be at a slight angle and the roller tip will not be perfectly parallel or centered on the valve. It will feature a larger 2.125'' diameter intake valve. Exhaust valve diameter stays the same, at 1.600'' diameter, with a little more flow from its larger runner volume. The big news is in the intake port design which pushes this standard location intake port over 340 CFM's! That's 18° head territory and this head should be able to generate power figures that rival those heads (725+ HP). As well the exhaust port and bolt pattern are raised .250'' (1/4'') over GM L98 head, this rarely affects header or chassis fitment. These 235cc aluminum cyilnder heads are available in either standard port or spread port exhaust configurations. Spread port heads have the center exhaust ports spread apart 5/8'' over stock L98 GM heads. The reason for spread port heads is to achieve additional cooling in the center of the head where the heat concentration is greatest. As standard headers do not fit, spread port headers are required since the center ports are spread further apart then stock GM products. The increased spacing on the exhaust port also requires the use of exhaust gasket Fel-Pro p/n 375-1409. Spread port heads only come with a Stahl bolt pattern. AFR's spread port head has all the benefits and features of AFR's standard head. .

    235cc Eliminator Race Cylinder Head Features:
  • 100% CNC Ported Combustion Chambers
  • 100% CNC Ported Exhaust Ports
  • 100% CNC Ported Intake Ports
  • Competition 5-angle Valve Job
  • 235cc Intake Ports
  • 80cc+ Exhaust Ports
  • Bead Lock Intake Valve, 2.125'' x 5.006'' Overall Valve Length
  • Bead Lock Exhaust Valve, 1.600'' x 5.024'' Overall Valve Length
  • PAC Racing Valve Springs
  • 10° Retainers
  • 10° Bead Lock Valve Keepers
  • 7/16'' Rocker Studs
  • Adjustable 5/16'' Guide Plates
  • Viton Valve Seals
  • Hardened Spring Cup
  • Intake Valve Seats
  • Exhaust Valve Seats
  • Bronze Valve Guides
  • Standard or Spread Port Exhaust Bolt Pattern

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