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AFR - Airflow Research 1520

210cc LSX Mongoose Street Aluminum Cylinder Heads LS1 / LS2 / LS6 Chevy

033-1520

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Estimated ship date 09/06/17 if Ordered Today
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AFR - Airflow Research 1520 210cc LSX Mongoose Street Aluminum Cylinder Heads LS1 / LS2 / LS6 Chevy $1,991.41
210cc LSX Mongoose Street Aluminum Cylinder Heads
  • LS1 / LS2 / LS6 Chevy
  • 66cc Combustion Chambers
  • Cathedral Style Intake Port
  • Bare Head Only
  • Sold in Pairs, 2/pkg.

  • AFR - Airflow Research 1520 Details

    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.

    LS1/LS2/LS6 Chevy 210cc Mongoose 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 - 2.020'' (Valve not included)
    Exhaust Valve Size - 1.600'' (Valve not included)
    Hardened Spring Cups
    Intake Valve Seats
    Exhaust Valve Seats
    Bronze Valve Guides
    LS1/LS2/LS6 Chevy 210cc Mongoose Street Head Specifications
    Head Torque w/Moly Lube 11mm ARP 70 Ft. Lbs. / 8mm 23 Ft. Lbs.
    Intake Port Volume 210cc
    Exhaust Port Volume 84cc
    Exhaust Port Gasket Fel Pro 375-1440
    Head Gasket Fel Pro 375-1041
    Cometic 033-6846
    Head Bolts & Studs Standard ARP
    Head Bolt Washers Standard ARP
    Shaft Mount Rocker Arms Yella Terra Ultralite p/n 033-6038
    Suggested Manifold LS6 or FAST p/n 244-54039B
    Spark Plug Starting Range AC 41-974 Platinum
    Combustion Chambers 66cc
    Spring Pocket can be cut to 1.525, no deeper.
    Valve Spacing Stock
    Rocker Arms Stock
    Valve Angle Stock
    Flat Mill .006'' per cc

    Specifications:

    Manufacturer's Part Number:
    1520

    The Small Port, High Velocity Torque Monster!

    For the ultimate high performance street LS1/LS2/LS6 aluminum cylinder head AFR's all new 210cc emissions legal (CARB EO #D250-4) heads are your only choice. Specifically designed for 1997 to present Gen-3 Chevy Corvettes, Camaros, and trucks using a 3.900'' cylinder bore. AFR's LSX cylinder head offers unmatched flow performance (302 CFM at .600'' lift) and features 2.020'' intake and 1.600'' exhaust valves with AFR's iron ductile interlocking valve seats. With only 210cc port volume (same as stock LS1 head) this is an incredible 70CFM increase over stock casting, creating unbelievable port velocity and performance. This 210cc cylinder head is ideal for normally aspirated 346-396ci engines. It features a 66cc combustion chambers and the LSX is a direct bolt on, no special parts required. Structural features like Air Flow Research's trademark 3/4'' thick head deck, a must for blown and nitrous applications, reinforced rocker stud bosses, and thick wall runners provide unparalleled durability. An exclusive new modern combustion chamber design with double quench pad area helps the LSX generate huge low- and mid-lift airflow numbers. If you need a snake charmer for that pesky neighborhood ''Cobra'' look no further. .

    Installation Notes: LSX bead locks and aftermarket bead locks are not interchangeable. GM made their bead lock radius and depth different. AFR locks are the same as GM LSX.
    Hydraulic roller cams in ''LS'' Gen III engines typcially experience valve float at 6600-6800 RPM's. If you are using aftermarket rocker arms, plan on running over .600'' gross valve lift, or if you are revving beyond 6600 RPM valve float will become prominent. AFR suggests you upgrade your springs to AFR p/n 033-8019. This upgrade spring has higher seat and open pressures (155/410+) to better reduce the risk of valve float in more aggressive applications.

    210cc LSX Mongoose Street Cylinder Head Features:
  • 100% CNC Ported Combustion Chambers
  • 100% CNC Ported Exhaust Ports
  • 100% CNC Ported Intake Ports
  • Competition 5-angle Valve Job
  • 210cc Intake Ports
  • 84cc Exhaust Port
  • 66cc Combustion Chambers
  • Bead Lock Intake Valve, 2.020'' x 4.907'' Overall Valve Length
  • Bead Lock Exhaust Valve, 1.600'' x 4.907'' Overall Valve Length
  • PAC Racing Valve Spring: 1.290'' OD Hydraulic Roller Dual Valve Spring, 135 lbs on seat, .600'' maximum lift, Max RPM 6300-6500
  • 7° 1.250'' Titanium Retainers
  • 7° Bead Lock Valve Keepers
  • Viton Valve Seals
  • Hardened Spring Cup
  • Intake Valve Seats
  • Exhaust Valve Seats
  • Bronze Valve Guides

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