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AFR - Airflow Research 195cc LT1/LT4 Eliminator Street Aluminum Cylinder Heads SB-Chevy

AFR - Airflow Research 1031

033-1031

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AFR - Airflow Research 195cc LT1/LT4 Eliminator Street Aluminum Cylinder Heads SB-Chevy $1,784.80
195cc LT1/LT4 Eliminator Street Aluminum Cylinder Heads
  • SB-Chevy
  • Street CNC Porting
  • 1.290'' Hyd Roller Dual Valve Spring
  • 65cc Combustion Chambers
  • Angle Spark Plug
  • Assembled
  • CARB OE #D-250-2
  • Sold in Pairs, 2/pkg.

  • AFR - Airflow Research 1031 Details

    Street CNC Porting LT1/LT4 Eliminator Cylinder Heads

  • 2.050'' Intake Valve

    Small Block Chevy 195cc LT1/LT4 Eliminator 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, 2.050'' x 4.903'' o.a.l.
    Exhaust Valve, 1.600'' x 4.955'' o.a.l.
    1.290'' OD Hydraulic Roller Dual Valve Spring, 135 lbs. on seat, .600'' maximum lift, max RPM 6300-6500
    7º Titanium Retainers
    7º Valve Locks
    3/8'' Rocker Studs
    Adjustable 5/16'' Guide Plates (if using non-self aligning rockers)
    Viton Valve Seals
    Hardened Spring Cups
    Intake Valve Seats
    Exhaust Valve Seats
    Bronze Valve Guides
     Small Block Chevy 195cc LT1/LT4 Eliminator Street Head SpecificationsHead Torque w/Moly Lube65-70 Ft. Lbs.Rocker Stud Torque55 Ft. Lbs.Intake Port GasketFel-Pro 375-1284 - DO NOT PORT MATCH Intake Manifold to Fel-Pro Gasket.Exhaust Port GasketFel Pro 375-1404Head Gasket350ci Fel Pro 375-1074Head Bolts & StudsStandard ARPHead Bolt WashersManley StandardStud GirdleStandard GM L98Suggested ManifoldGM LT4Spark Plug Starting RangeAC FR3LS or 41629Combustion Chambers65ccSpring Pocket can be cut to 1.625, no deeper.Valve SpacingStandard GM L98Rocker ArmsStandard GM L98Valve Angle23°Angle Mill.008'' per ccFlat Mill.006'' per cc

  • 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
    Yes
    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)
    65
    Intake Port Location
    Standard
    Exhaust Port Location
    Raised
    Oiling Style
    Through pushrod
    Intake Valve Diameter (in.)
    2.05
    Exhaust Valve Diameter (in.)
    1.6
    Valve Guide Material
    Bronze
    Intake Runner Volume (cc)
    195
    Valve Seat Material
    Ductile iron
    Valve Cover Mounting Style
    Center and perimeter bolt
    Intake Valve Angle
    23
    Valve Seat Machine Style
    3-angle
    Exhaust Runner Volume (cc)
    64
    Outside Diameter of Outer Spring (in.)
    1.29
    Maximum Valve Lift (in.)
    0.6
    Number of Springs Per Valve
    Dual
    Retainer Material
    Titanium
    Lock Style
    7 degree
    Exhaust Valve Angle
    23
    Spark Plug Style
    Angled
    Combustion Chamber Style
    Heart
    Manufacturer's Part Number:
    1031
    Shipping Weight:
    0.00
    Package Height:
    0.00
    Package Depth:
    0.00
    Package Width:
    0.00

    The Ultimate Bolt-on
    Emissions Legal Street Weapon!

    The AFR Emissions Legal (CARB EO #D-250-2 for engines up to 1994), 195cc intake port LT4 small block Chevy aluminum cylinder heads are available in an LT4 angle plug version. These heads feature a 58cc combustion chamber (can be special ordered 55 to 65cc) with a 64cc exhaust port and a 3/4'' thick head deck (ideal for nitrous or blower applications). Standard valves are lightweight 8mm diameter stem, 2.020'' intake and 1.600'' exhaust valves with AFR's hardened ductile iron interlocking valve seats. The exceptional flow characteristics, ideal operating range of 2500 rpm to 6500 rpm (higher rpm ranges possible depending on combination of parts), 23° valve angle, and standard valve spacing make this the perfect street head for 350-383 ci engines. Designed specifically for 1996 Corvettes or LT4 manifold users. No special parts are required. Dual valve cover bolt pattern is standard. Exhaust port and bolt pattern are raised .100'' (3/32'') over GM L98 cylinder heads, this rarely affects header or chassis fitment. .
    Installation Note: Hydraulic roller cams typically experience valve float at 6200-6400 rpm because of their fast ramp rates. AFR suggest you upgrade your springs to AFR part number 033-8605, 1.270'' O.D. with higher spring pressures and use our Patented ''Hydra Rev Kit'' to reduce chances of valve float associated with rpm 6200 or higher.

    195cc LT1 Eliminator Street Cylinder Head Features:
  • 100% CNC Ported Combustion Chambers
  • 100% CNC Ported Exhaust Ports
  • 100% CNC Ported Intake Ports
  • Competition 5-angle Valve Job
  • 195cc Intake Ports
  • 58cc Combustion Chamber (Can be special ordered 55 to 65cc)
  • 64cc Exhaust Ports
  • Bead Lock Intake Valve, 2.050'' x 4.903'' Overall Valve Length (Street Port Head)
  • Bead Lock Intake Valve, 2.080'' x 4.903'' Overall Valve Length (Competition Package Street Port Head)
  • Bead Lock Exhaust Valve, 1.600'' x 4.955'' Overall Valve Length
  • PAC Racing Valve Spring: 1.290'' OD Hydraulic Roller Dual Valve Spring, 135 lbs on seat, .600'' maximum lift (Street Port Head)
  • PAC Racing Valve Spring: 1.270'' OD Hydraulic Roller Valve Spring woth Dampener, 155 lbs on seat, .650'' maximum lift (Competiton Package Street Port Head)
  • 7° Titanium Retainers
  • 7° Bead Lock Valve Keepers
  • 3/8'' Rocker Studs
  • Adjustable 5/16'' Guide Plates (if using non-self aligning rockers)
  • Viton Valve Seals
  • Hardened Spring Cup
  • Intake Valve Seats
  • Exhaust Valve Seats
  • Bronze Valve Guides
  • Standard Exhaust Bolt Pattern, Accepts Factory and Aftermarket Headers

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