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World Products 030620-2

Big Block Chevy Merlin III Cast Iron Cylinder Head 320cc Retangular Intake Ports

World Products 030620-2

955-030620-2

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World Products 030620-2 Big Block Chevy Merlin III Cast Iron Cylinder Head 320cc Retangular Intake Ports $777.91
Big Block Chevy Merlin III Cast Iron Cylinder Head
  • 320cc Retangular Intake Ports
  • 119cc Combustion Chambers
  • 2.300'' Int/1.880'' Exh Valves
  • 1.550'' Valve Springs, .650'' Max Lift for Hydraulic Roller Cam
  • Assembled, Sold Individually

  • World Products 030620-2 Details

    Big Block Chevy Merlin III Cast Iron Rectangular-Port Cylinder Heads

    Valve Spring Specs: 1.550'' Dual Valve Spring 150#, .650'' Max Lift

    Specifications:

    Accessory Bolt Holes Drilled
    Yes
    CNC-Machined Combustion Chamber
    No
    CNC-Machined Exhaust Runner
    No
    CNC-Machined Intake Runner
    No
    Combustion Chamber Style
    Open chamber
    Combustion Chamber Volume (cc)
    119
    Cylinder Head Finish
    Natural
    Cylinder Head Material
    Cast iron
    Cylinder Head Style
    Assembled
    Damper Spring Included
    No
    Exhaust Port Location
    Raised
    Exhaust Port Shape
    Round
    Exhaust Valve Diameter (in.)
    1.88
    Exhaust Valves Included
    Yes
    Guideplates Included
    No
    Heat Crossover
    No
    Intake Port Location
    Standard
    Intake Port Shape
    Rectangular
    Intake Runner Volume (cc)
    320
    Intake Valve Diameter (in.)
    2.3
    Intake Valves Included
    Yes
    Lock Style
    7 degree
    Locks Included
    Yes
    Machined for O-Ring
    No
    Maximum Valve Lift (in.)
    0.65
    Number of Springs Per Valve
    Dual
    Oiling Style
    Through pushrod
    Outside Diameter of Outer Spring (in.)
    1.55
    Quantity
    Sold individually
    Retainer Material
    Chromoly steel
    Retainers Included
    Yes
    Rocker Arm Nuts Included
    No
    Rocker Arm Studs Included
    No
    Rocker Arms Included
    No
    Steam Holes Drilled
    No
    Valve Guide Material
    Cast iron
    Valve Guides Included
    Yes
    Valve Seat Machine Style
    3-angle
    Valve Seat Material
    Steel
    Valve Seats Machined
    Yes
    Valve Springs Included
    Yes
    Valve Stem Seal Style
    Positive stop
    Valve Stem Seals Included
    Yes
    Manufacturer's Part Number:
    030620-2

    Improved Performance Over Chevy's Legendary LS6 Heads!

    Merlin 269cc Oval Port heads are excellent for most street-driven big-blocks up to 468ci. They'll out-perform larger heads in many applications. When larger engines (454 to 540ci) require added flow, choose the Merlin Rectangle Port cylinder heads. With RightCast 320cc and 345cc intake runners, you can expect solid gains in air/fuel mixture combustion charges. These World Products heads will really respond to higher compression ratios, and are ideally suited for hot street/strip cars.

    Technical Specifications
  • Material: High density cast iron
  • Valve Seats: Integral intake,hardened steel exhaust
  • Valve Guides: Integral cast iron
  • Valve Spring Seats: Bare castings machined for 1.550'' springs
  • Valve Size: 2.300'' x 1.880''
  • Exhaust Flange: Port location raised .250'' , accessory bolt holes, requires ARP Head Bolts #070-135-3605.
  • Included In Base Assembly: Erson stainless steel valves, ring and band style (-1 and -2 models) or PC style (-3 and -4 models) valve seals, 1.550'' (-1, -2 and -3 models) or 1.640'' (-4 models) valve springs, Erson 7° (-1 and -2 models) or 10° (-3 models) retainers and keepers.

    Recommended Installation Accessories
  • Head Gaskets: Fel-Pro 375-1017-1 or equivalent
  • Pushrods: Requires heat treated pushrods
  • Rocker Arm Studs: 7/16'' with 7/16''-14 base thread
  • Pushrod Guideplates: BBC Stepped 3/8''
  • Spark Plugs: Accepts 14mm .460'' reach tapered seat 5/8'' hex (AC Delco R42TS/R43TS) or equivalent. Heat range may vary. Consult with engine builder.
  • Intake Gasket: Fel-Pro 375-1212 or equivalent for oval port head. Fel-Pro 375-1211 or equivalent for rectangle port head.
  • Exhaust Gasket: Fel-Pro 375-1410 or equivalent
  • Head Bolts: 8 longer than stock required (955-832015-8)

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