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AFR - Airflow Research 908

180cc LT1 Eliminator Street Aluminum Cylinder Heads SB-Chevy

AFR - Airflow Research 908

033-908

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Estimated ship date 10/03/17 if Ordered Today
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AFR - Airflow Research 908 180cc LT1 Eliminator Street Aluminum Cylinder Heads SB-Chevy $1,784.80
180cc LT1 Eliminator Street Aluminum Cylinder Heads
  • SB-Chevy
  • 58cc Stocked
  • 55-65cc Combustion Chambers Offered
  • 180cc Intake Port
  • 64cc Exhaust Port
  • Angle Plug
  • Assembled
  • CARB OE #D-250-2
  • Sold in Pairs

  • AFR - Airflow Research 908 Details

    Small Block Chevy 180cc LT1 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, 2.020'' 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
    Viton Valve Seals
    Hardened Spring Cups
    Intake Valve Seats
    Exhaust Valve Seats
    Bronze Valve Guides
    Small Block Chevy 180cc LT1 Eliminator Street Head Specifications
    Head Torque w/Moly Lube 65-70 Ft. Lbs.
    Rocker Stud Torque 55 Ft. Lbs.
    Intake Port Gasket Fel-Pro 375-1284 - DO NOT PORT MATCH Intake Manifold to Fel-Pro Gasket.
    Exhaust Port Gasket Fel Pro 375-1404
    Head Gasket 350ci Fel Pro 375-1074
    Head Bolts & Studs Standard ARP
    Head Bolt Washers Manley Standard
    Stud Girdle Standard GM L98
    Suggested Manifold GM LT1
    Spark Plug Starting Range AC FR3LS or 41629
    Combustion Chambers 55 to 65cc
    Spring Pocket can be cut to 1.625, no deeper.
    Valve Spacing Standard GM L98
    Rocker Arms Standard GM L98
    Valve Angle 23°
    Angle Mill .008'' per cc
    Flat Mill .006'' per cc

    Specifications:

    Manufacturer's Part Number:
    908

    The Small Port, High Velocity, Torque Monster!

    The AFR Emissions Legal (CARB EO #D-250-2 for engines up to 1994), 180cc intake port LT1 Small Block Chevy cylinder heads are available in the LT1 angle plug version only. These heads feature a 55cc to 65cc combustion chamber 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 with AFR's hardened ductile iron interlocking valve seats. The exceptional flow characteristics, ideal operating range of idle to 6000 rpm (higher rpm ranges possible depending on combination of parts), 23° valve angle, and standard valve spacing make this the perfect street cylinder head for 350-383ci performance engines and is specifically designed for 1992-95 Corvettes and 1993-97 Camaros. No special parts are required (see footnotes here). Dual valve cover bolt pattern is standard. Exhaust port and bolt pattern are raised 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.

    180cc 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
  • 180cc Intake Ports
  • 64cc Exhaust Ports
  • Bead Lock Intake Valve, 2.020'' x 4.903'' Overall Valve Length
  • 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
  • 7° Titanium Retainers
  • 7° Bead Lock Valve Keepers
  • 3/8'' Rocker Studs (if using non-self aligning rockers)
  • Adjustable 5/16'' Guide Plates
  • Viton Valve Seals
  • Hardened Spring Cup
  • Intake Valve Seats
  • Exhaust Valve Seats
  • Bronze Valve Guides
  • Standard Exhaust Bolt Pattern, Accepts Factory and Aftermarket Headers

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