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Dart 11520020P - Dart Small Block Chevy Pro 1 Aluminum Cylinder Heads



Dart 11520020P - Dart Small Block Chevy Pro 1 Aluminum Cylinder Heads

JEGS Part Number: 301-11520020P

Bare Platinum Pro 1 Aluminum Cylinder Head
  • Straight Plug
  • $590.14
    Ships 08/01/16
    if Ordered Today
    FREE Shipping

    Specifications:

    Accessory Bolt Holes Drilled
    Yes
    Calculator
    Compression Calculator
    CNC-Machined Combustion Chamber
    No
    CNC-Machined Exhaust Runner
    No
    CNC-Machined Intake Runner
    No
    Combustion Chamber Style
    Heart
    Combustion Chamber Volume (cc)
    64
    Cylinder Head Finish
    Natural
    Cylinder Head Material
    Aluminum
    Cylinder Head Style
    Bare
    Damper Spring Included
    No
    Exhaust Port Location
    Standard
    Exhaust Port Shape
    Square
    Exhaust Runner Volume (cc)
    75
    Exhaust Valve Angle
    23
    Exhaust Valve Diameter (in.)
    1.6
    Exhaust Valves Included
    No
    Guideplates Included
    No
    Heat Crossover
    No
    Intake Port Location
    Standard
    Intake Runner Volume (cc)
    215
    Intake Valve Angle
    23
    Intake Valve Diameter (in.)
    2.05
    Intake Valves Included
    No
    Locks Included
    No
    Machined for O-Ring
    No
    Oiling Style
    Through pushrod
    Quantity
    Sold individually
    Retainers Included
    No
    Rocker Arm Nuts Included
    No
    Rocker Arm Studs Included
    No
    Rocker Arms Included
    No
    Spark Plug Style
    Straight
    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
    No
    Valve Stem Seals Included
    No
    Manufacturer's Part Number:
    11520020P

    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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