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United Engine Machine Chrysler 360ci Hypereutectic Pistons Quench Head

United Engine Machine KB373.030


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Estimated to ship directly from the manufacturer on 08/17/18
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United Engine Machine Chrysler 360ci Hypereutectic Pistons Quench Head $293.99
Chrysler 360ci Hypereutectic Pistons
  • Quench Head
  • 4.030'' Bore (+.030'')
  • Use w/6.123'' Connecting Rod & 3.580'' Crank Stroke
  • Comp. Ratio: 11.2/62cc; 11.0/64cc; 10.5/68cc; 10.0/72cc
  • 8/pkg

  • United Engine Machine KB373.030 Details

    Chrysler 360ci

  • Quench Top Pistons
  • Note:
  • Piston may protrude on 1992-up Magnum truck blocks
  • Quench dome elevated .085''
  • Machining required to achieve optimum quench
  • Will not work with Magnum or Edelbrock closed chamber heads

    Technical Specs:
  • Alloy: Hypereutectic 390
  • Bore: 4.030''
  • Crankshaft Stroke: 3.580''
  • Connecting Rod Length: 6.123''
  • Deck Height: 9.599''
  • Compression Height: 1.675''
  • Pin Size: 0.9842''
  • Pin Location: Centered
  • Quench Top: -2.8cc 2V Relief
  • Intake Valve Relief: 0.286'' Depth / 2.200'' Diameter
  • Exhaust Valve Relief: 0.286'' Depth / 2.200'' Diameter
  • Top Landing Height: 0.275''
  • Ring Grooves: 5/64'' Top; 5/64'' Middle; 3/16'' Bottom
  • Gram Weight: 512/132
  • Compression Ratio: 11.2:1 w/62cc Heads; 11.0:1 w/64cc Heads; 10.5:1 w/68cc Heads; 10.0:1 w/72cc Heads

  • Specifications:

    Manufacturer's Part Number:

    100% CNC Machined Pistons

    New high silicon alloys and diamond tooling have give Keith Black designers the material and equipment for performance breakthroughs in engine design. KB piston are 100% CNC machined and T-6 heat treated from 16%-18% silcon Hypereutectic alloy. Features include drilled oil returns and pin oil supply, .072'' spiral wound retaining ring, 100% diamond turned, compensated high strength ring lands, high top ring location, 360° pressure pin oiling, diamond honed pin hole and lightweight rigid rib skirt design.


    • 390 Hypereutectic alloy with 16% Silicon
    • Fully machined crowns and valve reliefs
    • Drilled oil drain backs
    • Full floating wrist pins
    • Triple wound spiral locks
    • Reflective alloy allows 2% power increase
    • Quench dome technology minimizes deterioration
    • Zero deck quench designs
    • Sold in Sets (except when noted as 1 piston per package)

      Click here for reference guide to piston top designs

    Some parts are not legal for use in California or other states with similar laws / regulations