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United Engine Machine KB137KTM.040

Ford 460ci Hypereutectic Piston And Ring Kit Flat Top

United Engine Machine KB137KTM.040
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United Engine Machine KB137KTM.040 Ford 460ci Hypereutectic Piston And Ring Kit Flat Top $426.99
Ford 460ci Hypereutectic Piston And Ring Kit
  • Flat Top
  • 4.400'' Bore (+.040'')
  • Use w/6.605'' Connecting Rod & 3.850'' Crank Stroke
  • Comp. Ratio: 11.8/76cc; 11.0/82cc; 10.2/91cc; 9.7/97cc
  • 8/pkg

  • United Engine Machine KB137KTM.040 Details

    Ford 460ci

  • Flat Top Pistons
  • Kit Includes:
  • 648-KB137.040 Pistons
  • 648-4360AM8.040 Rings

    Technical Specs:
  • Alloy: Hypereutectic 390
  • Bore: 4.400'' (+.040'')
  • Crankshaft Stroke: 3.850''
  • Connecting Rod Length: 6.605''
  • Deck Height: 10.320''
  • Compression Height: 1.772''
  • Pin Size: 1.040''
  • Pin Location: Centered
  • Flat Top: -2.5cc 1V Relief
  • Intake Valve Relief: 0.236'' Depth / 2.370'' Diameter
  • Exhaust Valve Relief: N/A
  • Top Landing Height: 0.273''
  • Ring Grooves: 5/64'' Top; 5/64'' Middle; 3/16'' Bottom
  • Gram Weight: 750/166
  • Compression Ratio: 11.8:1 w/76cc Heads; 11.0:1 w/82cc Heads; 10.2:1 w/91cc; 9.7:1 w/97cc 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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