AFR 1031 - Small Block Chevy 195cc LT1/LT4 Eliminator Street Aluminum Cylinder Heads-Pair

$1,899.00

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 Specifications
    Head 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 375-1404
    Head Gasket350ci Fel Pro 375-1074
    Head Bolts & StudsStandard ARP
    Head Bolt WashersManley Standard
    Stud GirdleStandard GM L98
    Suggested ManifoldGM LT4
    Spark Plug Starting RangeAC FR3LS or 41629
    Combustion Chambers58cc
    Spring Pocket can be cut to 1.625, no deeper.
    Valve SpacingStandard GM L98
    Rocker ArmsStandard GM L98
    Valve Angle23°
    Angle Mill.008'' per cc
    Flat Mill.006'' per cc

    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. Made in USA. 
    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 

  • Picture for reference only.