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United Engine Machine KB405.024

Oldsmobile 403ci Hypereutectic Pistons Dish Top

United Engine Machine KB405.024

648-KB405.024

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Estimated ship date 10/06/17 if Ordered Today
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United Engine Machine KB405.024 Oldsmobile 403ci Hypereutectic Pistons Dish Top $411.99
Oldsmobile 403ci Hypereutectic Pistons
  • Dish Top
  • 4.375'' Bore (+.024'')
  • Use w/6.000'' Connecting Rod & 3.385'' Crank Stroke
  • Comp. Ratio: 9.5/83cc; 8.5/96cc
  • 8/pkg

  • United Engine Machine KB405.024 Details

    Oldsmobile 403ci

  • Dish Top Pistons
  • Technical Specs:
  • Alloy: Hypereutectic 390
  • Bore: 4.375''
  • Crankshaft Stroke: 3.385''
  • Connecting Rod Length: 6.000''
  • Deck Height: 9.312''
  • Compression Height: 1.615''
  • Pin Size: 0.9805''
  • Pin Location: Centered
  • D-Cup Dish Top: -6cc 2 Valve Reliefs
  • Intake Valve Relief: N/A
  • Exhaust Valve Relief: N/A
  • Top Landing Height: 0.281''
  • Ring Grooves: 1/16'' Top; 1/16'' Middle; 3/16'' Bottom
  • Gram Weight: 674/147
  • Compression Ratio: 9.5:1 w/83cc Heads; 8.5:1 w/96cc Heads

  • Specifications:

    Manufacturer's Part Number:
    KB405.024

    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.

    Features:

    • 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