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Dart 11971143P
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Dart Assembled Platinum Pro 1 Aluminum Cylinder Head Angled Plug

301-11971143P

made in usa
Free Shipping Estimated to ship directly from the manufacturer on 02/05/19

$1,560.90
Dart Assembled Platinum Pro 1 Aluminum Cylinder Head Angled Plug $1,560.90
Out of stock
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Assembled Platinum Pro 1 Aluminum Cylinder Head
  • Angled Plug
  • Valves: 2.08'' Intake, 1.60'' Exhaust
  • Dual Valve Springs: 1.550''
  • Specifications:

    Accessory Bolt Holes Drilled
    Yes
    CNC-Machined Combustion Chamber
    Yes
    CNC-Machined Exhaust Runner
    Yes
    CNC-Machined Intake Runner
    Yes
    Combustion Chamber Style
    Heart
    Combustion Chamber Volume (cc)
    64
    Cylinder Head Finish
    Natural
    Cylinder Head Material
    Aluminum
    Cylinder Head Style
    Assembled
    Damper Spring Included
    Yes
    Exhaust Port Location
    Standard
    Exhaust Port Shape
    Square
    Exhaust Runner Volume (cc)
    85
    Exhaust Valve Angle
    15
    Exhaust Valve Diameter (in.)
    1.6
    Exhaust Valves Included
    Yes
    Guideplates Included
    Yes
    Heat Crossover
    No
    Intake Port Location
    Standard
    Intake Runner Volume (cc)
    227
    Intake Valve Angle
    24
    Intake Valve Diameter (in.)
    2.08
    Intake Valves Included
    Yes
    Lock Style
    10 degree
    Locks Included
    Yes
    Machined for O-Ring
    No
    Maximum Valve Lift (in.)
    0.69
    Number of Springs Per Valve
    Dual
    Oiling Style
    Through pushrod
    Outside Diameter of Outer Spring (in.)
    1.55
    Quantity
    Sold individually
    Retainer Material
    Titanium
    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
    Spark Plug Style
    Angled
    Steam Holes Drilled
    No
    Valve Cover Mounting Style
    Center and perimeter bolt
    Valve Guide Material
    Manganese bronze
    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:
    11971143P

    As a direct result of Dart's wet-flow testing, the intake seats of these cylinder heads have five distinct angles. Each of the angles provides a shear point for the fuel to go into suspension before it enters a chamber. The heads also have back-cut valves, which make a big difference in how fuel is conditioned before entering combustion chambers. Result: the engine pulls more fuel and creates more power. Spark plugs are located as close to top center of the combustion chambers as possible. This shortens the flame's travel distance and produces a more uniform pressure rise in the cylinder to push pistons down.

    Features
  • Hardened Exhaust Seats
  • Multi-Angle Intake Seats
  • Dual Exhaust Bolt Pattern
  • C355-T61 Aerospace Alloy
  • Angled or Straight Spark Plugs
  • Manganese Bronze Valve Guides
  • Heart-Shaped Combustion Chambers
  • Sold Individually (Bare or Assembled)
  • Bolt-On Compatibility with Standard Valve Angle & Spacing

    Click the image for more Pro 1 details

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