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United Engine Machine Ford 347ci Hypereutectic Pistons Solid Dome .100"

United Engine Machine KB332.040
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United Engine Machine Ford 347ci Hypereutectic Pistons Solid Dome .100" $411.99
Ford 347ci Hypereutectic Pistons
  • Solid Dome .100''
  • 4.040'' Bore (+.040'')
  • Use w/5.400'' Connecting Rod & 3.400'' Crank Stroke
  • Comp. Ratio: 13.4/60cc; 12.6/64cc; 11.7/69cc
  • Designed for Ford Sportsman ''N'' Head
  • 8/pkg

  • United Engine Machine KB332.040 Details

    Ford 347ci

  • Dome Top Pistons
  • Use with Ford 302 Block
  • Technical Specs:
  • For use with Ford 302 Block.
  • Alloy: Hypereutectic 390
  • Bore: 4.040''
  • Crankshaft Stroke: 3.400''
  • Connecting Rod Length: 5.400''
  • Deck Height: 8.206''
  • Compression Height: 1.090''
  • Pin Size: 0.9272''
  • Pin Location: Centered, 2.5'' long. Spacer ring included.
  • Solid Dome: .100'' 11cc
  • Intake Valve Relief: N/A
  • Exhaust Valve Relief: N/A
  • Top Landing Height: 0.171''
  • Ring Grooves: 1/16'' Top; 1/16'' Middle; 3/16'' Bottom
  • Gram Weight: 463/102
  • Compression Ratio: 13.4:1 w/60cc Heads; 12.6:1 w/64cc Heads; 11.7:1 w/69cc 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