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Dart 15200136

Big Block-Chevy Iron Eagle Cylinder Head 345cc Intake Ports



Dart 15200136

Part Number: 301-15200136

Big Block-Chevy Iron Eagle Cylinder Head
  • 345cc Intake Ports
  • 119cc Combustion Chambers
  • 2.30'' Int/1.88'' Exh Valves
  • 1.625'' Springs, 250lbs @ 2.000''
  • .850'' Max Lift
  • Assembled, Sold Individually
  • $1,236.73
    Ships 10/03/16
    if Ordered Today
    Made In USA
    FREE Shipping
    Dart 15200136 Big Block-Chevy Iron Eagle Cylinder Head 345cc Intake Ports $1,236.73

    Dart 15200136 Details

    Big Block Chevy Iron Eagle Cylinder Heads - 345cc Intake Ports, 119cc Combustion Chambers

    Specification

    Material: Superior cast iron alloy
    Combustion Chambers: 119cc
    Intake Valve Dia: 2.30''
    Intake Port Dim: Int Port Location: Stock
    Intake Gasket: Mr. Gasket 720-121
    Exhaust Valve Dia: 1.88''
    Exh Port Volume: 129cc
    Exh Port Dim: 1.670'' x 1.800''
    Exh Port Location: Raised .300'' Standard Bolt Pattern
    Exhaust Gasket: Fel-Pro 375-1412
    Exhaust Bolts: 1'' longer than stock (4) ea.
    Flow, Intake: 390cfm @ .800'' lift
    Flow, Exhaust: 266cfm @ .800'' Lift
    Manifold: Rectangular Port Dart (opening - 1.575'' x 2.250'') 6.25'' tall
    Milling: Min 110cc (.005'' = 1cc) Flat Mill only
    Pistons: Most aftermarket pistons
    Push Rod Length: Avg +.200'' / +.250'' Should always measure; Stock Length Int = 8.275'' / Exh = 9.250''
    Retainers: 1.625'' - Titanium / 1.550'' - Moly Steel 10°
    Spark Plug: .750'' reach, gasketed, Champion C59C / C59YC Street RC12YC
    Spring Cups: 1.625'' - .035 cup / 1.550'' - ID locator
    Springs: 1.625'' Double Springs, 250lbs @ 2.000'', .790'' Max Lift Vasco-Jet H-11
    Stud Girdle: Must use Dart design 301-64110001
    Valve Angles: Int - 24°, Exh - 15° (Rolled 2°) 4° cant
    Valve Length: Int - 5.475'' (+.250'') Exh - 5.435'' (Stock)
    Valve Stem Dia: 11/32''
    Valve Train: Standard BBC 7/16'' stud mount
    Valve Guides: 1/2'' OD Mag-bronze Cut for .530'' PC seals (.002'' press)
    Valve Guide Length: Int - 2.100'' Exh - 2.250''
    Valve Guide Clearance: .0014'' - .0021'' (with 11/32'' dia valve stem)
    Valve Guide Spacing: Exh moved .045'' away from Int
    Valve Seats: Exh = Tungsten hardened alloy, .006'' press (TIR .004)
    Valve Seat Dim: Exh - 2.000'' x 1.600'' x .375''
    Valve Seat Angles: Int = 32° - 45° - 60° - 70°, Exh = 37° - 45° - radius
    Valve Covers: 301-68000040
    Torque: Head Bolts = 70 ft/lbs; Rocker Studs = 45 ft/lbs; Manifold = 35 ft/lbs
    Block Use: Mark IV, Gen V, Gen VI with proper head gasket
    Weight: 70 lbs

    Specifications:

    Accessory Bolt Holes Drilled
    Yes
    CNC-Machined Combustion Chamber
    No
    CNC-Machined Exhaust Runner
    No
    CNC-Machined Intake Runner
    No
    Combustion Chamber Style
    Heart
    Combustion Chamber Volume (cc)
    121
    Cylinder Head Finish
    Natural
    Cylinder Head Material
    Cast iron
    Cylinder Head Style
    Assembled
    Damper Spring Included
    No
    Exhaust Port Location
    Spread
    Exhaust Port Shape
    Round
    Exhaust Runner Volume (cc)
    129
    Exhaust Valve Angle
    15
    Exhaust Valve Diameter (in.)
    1.88
    Exhaust Valves Included
    Yes
    Guideplates Included
    Yes
    Heat Crossover
    No
    Intake Port Location
    Standard
    Intake Port Shape
    Rectangular
    Intake Runner Volume (cc)
    345
    Intake Valve Angle
    24
    Intake Valve Diameter (in.)
    2.3
    Intake Valves Included
    Yes
    Lock Style
    10 degree
    Locks Included
    Yes
    Machined for O-Ring
    No
    Maximum Valve Lift (in.)
    0.85
    Number of Springs Per Valve
    Dual
    Oiling Style
    Through pushrod
    Outside Diameter of Outer Spring (in.)
    1.625
    Quantity
    Sold individually
    Retainer Material
    Steel
    Retainers Included
    Yes
    Rocker Arm Nut Thread Size (in.)
    7/16"-20
    Rocker Arm Nuts Included
    No
    Rocker Arm Studs Included
    Yes
    Rocker Arms Included
    No
    Steam Holes Drilled
    No
    Valve Cover Mounting Style
    Perimeter bolt
    Valve Guide Material
    Manganese bronze intake/Phosphorous bronze exhaust
    Valve Guides Included
    Yes
    Valve Seat Machine Style
    4-angle intake/3-angle exhaust
    Valve Seat Material
    Ductile iron
    Valve Seats Machined
    Yes
    Valve Springs Included
    Yes
    Valve Stem Seal Style
    Positive stop
    Valve Stem Seals Included
    Yes
    Manufacturer's Part Number:
    15200136



    Imagine that you could get the advanced features of Dart's championship-winning aluminum big block heads in a cast-iron version. Now you can at a price that fits every budget!

    Dart's Big Block Iron Eagle Cylinder Heads were designed for street performance, bracket racing, oval track competition, tractor pulling, and high-performance marine applications. There are two rectangular ports: a high-velocity 308cc intake runner that produces incredible torque and a 345cc version that's perfect for big-inch, high-RPM Rat motors. The Iron Eagle's raised exhaust port outperforms its cast-iron competition but still fits most standard headers. Dart's dedicated tooling allows ports to be cast with incredible precision so you get maximum flow without spending big bucks on porting. Valve angles are rotated two degrees, and the efficent heart-shaped combustion chambers originally developed for Dart's championship-winning Race Series aluminum heads have been replicated.

    Iron Eagle big block heads have standard features you won't find in factory castings and aftermarket replacement heads. Premium bronze valve guides, multi-angle intake valve seats, and hardened and radiused exhaust seats are included with every Iron Eagle head. When you want premium performance at an economical price, demand Dart Iron Eagle Heads.

  • Bolt-on Compatability: 2° rolled valve angle and standard spacing
  • Heart-Shaped 119cc Chambers: Improve combustion efficiency
  • Multi-Angle Intake Seats: Compatible with unleaded gasoline
  • Exhaust Ports Raised .300": Improves flow (requires 1" longer head bolts next to exhaust port)
  • Manganese Bronze Intake Valve Guides: Extends cylinder head life
  • Phosphorous Bronze Exhaust Valve Guides: Resist heat produced by low-compression engine

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