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Oldsmobile 455ci Hypereutectic Pistons Step Dish Top
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UNITED ENGINE MACHINEPART NUMBER: 648-KB132.STD

Oldsmobile 455ci Hypereutectic Pistons Step Dish Top

$49490
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Oldsmobile 455ci
  • Dish Top Pistons
      • Oldsmobile 455ci Hypereutectic Pistons
    • Step Dish Top
    • 4.126'' Bore
    • Use w/6.735'' Connecting Rod & 4.250'' Crank Stroke
    • Comp. Ratio: 9.7/70cc; 9.3/75cc; 8.9/80cc
    • 8/pkg

      Technical Specs:
    • Alloy: Hypereutectic 390
    • Bore: 4.126'
    • Crankshaft Stroke: 4.250'
    • Connecting Rod Length: 6.735'
    • Deck Height: 10.625'
    • Compression Height: 1.750'
    • Pin Size: 0.9805'
    • Pin Location: Centered
    • Step Dish Top: -30cc
    • Intake Valve Relief: .070' Depth / 2.000' Diameter
    • Exhaust Valve Relief: .070' Depth / 2.000' Diameter
    • Top Landing Height: 0.300'
    • Ring Grooves: 5/64' Top; 5/64' Middle; 3/16' Bottom
    • Gram Weight: 600/147
    • Compression Ratio: 9.7:1 w/70cc Heads; 9.3:1 w/75cc Heads; 8.9:1 w/80cc Heads

    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% silicon 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.

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    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
    Part TypePiston
    Product LineUEM Pistons KB Signature Series Hypereutectic Oldsmobile Pistons
    BrandUNITED ENGINE MACHINE
    Part CategoryPerformance Parts
    Part FitmentSemi Universal
    Vendor Part NumberKB132.STD
    Package Qty1
    Package TypeEA
    Please click here to download the instructions PDF file
    Some parts are not legal for use in California or other states with similar laws / regulations
    p65 warning