Dart 10971143 Iron Eagle 23 Deg. Cylinder Heads, Cast Iron, 227cc intake, 72cc Comb.

$1,437.66
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SKU:
DAT10971143
MPN:
10971143
Condition:
New
Weight:
60.25 LBS
Shipping:
Calculated at Checkout

Applies To Continental U.S. orders only

Out of stock

10971143 - 1.550ƒ? Dual Springs for Solid Roller Cam .660ƒ?

Fully CNC ported. Maximum performance/full competition, unlimited oval and super classes. 7,000+ RPM, 400+ cubic inch engines.

Completely CNC machined, the Iron Eagle 23?ø 227cc CNC heads offer ultimate consistency and performance. With intake ports designed to optimize fuel/air flow efficiency and combustion chambers that offer a more complete and rapid burn, these heads are perfect for big inch small blocks.

Standard valve angle and spacing are retained to allow use of off the shelf pistons and valve train components.

Hardened exhaust seats are compatible with unleaded gasoline. Manganese Bronze valve guides extend cylinder head life.

Heads are sold individually.


Features
  • Material: High Nickel 220 BHN Cast Iron
  • Valve Angle: 23?ø (stock)
  • Intake Port Volume: 227cc CNC
  • Intake Valve: 2.080ƒ?
  • Exhaust Valve: 1.600ƒ?
  • Chamber Volume: 72cc
  • Plug Type: Angle
  • Cylinder Head Style:
    Assembled
    Cylinder Head Material:
    Cast iron
    Cylinder Head Finish:
    Natural
    CNC-Machined Combustion Chamber:
    Yes
    Combustion Chamber Volume (cc):
    72cc
    Combustion Chamber Style:
    Heart
    CNC-Machined Intake Runner:
    Yes
    Intake Runner Volume (cc):
    227cc
    Intake Port Shape:
    Rectangular
    Intake Port Location:
    Standard
    Intake Valve Angle:
    23 degree
    CNC-Machined Exhaust Runner:
    Yes
    Exhaust Runner Volume (cc):
    92cc
    Exhaust Port Shape:
    Square
    Exhaust Port Location:
    Standard
    Exhaust Valve Angle:
    23 degree
    Intake Valves Included:
    Yes
    Intake Valve Diameter (in.):
    2.080 in.
    Exhaust Valves Included:
    Yes
    Exhaust Valve Diameter (in.):
    1.600 in.
    Valve Type:
    N/A
    Maximum Valve Lift (in.):
    0.600 in.
    Valve Springs Included:
    Yes
    Valve Spring Type:
    Dual
    Outside Diameter of Outer Spring (in.):
    1.550 in.
    Valve Guides Included:
    Yes
    Valve Guide Material:
    Bronze
    Valve Seats Machined:
    Yes
    Valve Seat Material:
    Powdered metal
    Valve Seat Machine Style:
    4-angle intake/3-angle exhaust
    Retainers Included:
    Yes
    Retainer Material:
    Titanium
    Valve Stem Seals Included:
    Yes
    Valve Stem Seal Style:
    Positive Stop
    Locks Included:
    Yes
    Lock Style:
    N/A
    Camshaft Style:
    N/A
    Spark Plug Style:
    Angled
    Guideplates Included:
    No
    Guideplate Pushrod Size:
    N/A
    Rocker Arm Studs Included:
    No
    Rocker Arm Nut Thread Size:
    N/A
    Accessory Bolt Holes Drilled:
    Yes
    Valve Cover Mounting Style:
    Center and perimeter bolt
    Heat Crossover:
    No
    Steam Holes Drilled:
    No
    Oiling Style:
    Through pushrod
    Machined for O-Ring:
    No
    Quantity:
    Sold individually.
    Notes:
    Valve Spring Pressure, 690 lbs open, 215 lbs closed. Spark Plug Type 0.460 Reach
    Make:
    Chevrolet
    Engine Family:
    Chevy small block Gen I
    Engine Sizes:
    5.0L/305-5.7L/350
    Years:
    1962-1986