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United Engine Machine KB243.030

Chrysler 340ci Hypereutectic Pistons Flat Top

United Engine Machine KB243.030


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Estimated ship date 07/27/17 if Ordered Today
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United Engine Machine KB243.030 Chrysler 340ci Hypereutectic Pistons Flat Top $323.99
Chrysler 340ci Hypereutectic Pistons
  • Flat Top
  • 4.070'' Bore (+.030'')
  • Use w/6.123'' Connecting Rod & 3.310'' Crank Stroke
  • Comp. Ratio: 10.9/57cc; 10.5/60cc; 10.0/64cc; 9.6/68cc
  • 8/pkg

  • United Engine Machine KB243.030 Details

    Chrysler 340ci

  • Flat Top Pistons
  • Note: Technical Specs:
  • Alloy: Hypereutectic 390
  • Bore: 4.070''
  • Crankshaft Stroke: 3.310''
  • Connecting Rod Length: 6.123''
  • Deck Height: 9.599''
  • Compression Height: 1.840''
  • Pin Size: 0.9842''
  • Pin Location: Centered
  • Flat Top: -6cc 2V Relief
  • Intake Valve Relief: 0.286'' Depth / 2.200'' Diameter
  • Exhaust Valve Relief: 0.286'' Depth / 2.200'' Diameter
  • Top Landing Height: 0.305''
  • Ring Grooves: 5/64'' Top; 5/64'' Middle; 3/16'' Bottom
  • Gram Weight: 597/132
  • Compression Ratio: 10.9:1 w/57cc Heads; 10.5:1 w/60cc Heads; 10.0:1 w/64cc Heads; 9.6:1 w/68cc 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

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