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United Engine Machine KB111.STD

Chevy 383ci Hypereutectic Pistons Solid Dome .100"

United Engine Machine KB111.STD


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United Engine Machine KB111.STD Chevy 383ci Hypereutectic Pistons Solid Dome .100" $338.99
Chevy 383ci Hypereutectic Pistons
  • Solid Dome .100''
  • 4.000'' Bore (STD)
  • Use w/5.700'' Connecting Rod & 3.750'' Crank Stroke
  • Comp. Ratio: 12.9/58cc; 12.2/62cc; 11.9/64cc; 10.35/76cc
  • 1/pkg

  • United Engine Machine KB111.STD Details

    Chevy 383ci

  • Dome Top Pistons
  • Use w/5.700'' Connecting Rods
  • Use with Chevy 350ci Block and 400ci Crankshaft
  • Technical Specs:
  • Alloy: Hypereutectic 390
  • Bore: 4.000''
  • Crankshaft Stroke: 3.750''
  • Connecting Rod Length: 5.700''
  • Deck Height: 9.025''
  • Compression Height: 1.433''
  • Pin Size: 0.9272''
  • Pin Location: Centered
  • Flat Top: -.5cc 2 Symmetrical Valve Reliefs
  • Intake Valve Relief: 0.280'' Depth / 2.168'' Diameter
  • Exhaust Valve Relief: 0.280'' Depth / 2.168'' Diameter
  • Top Landing Height: 0.275''
  • Ring Grooves: 1/16'' Top; 1/16'' Middle; 3/16'' Bottom
  • Gram Weight: 535/145
  • Compression Ratio: 12.9:1 w/58cc Heads; 12.2:1 w/62cc Heads; 11.9:1 w/64cc; 10.35:1 w/76cc Heads
  • Use with 350ci block and 400ci crankshaft. This is a stroked 350ci chevy combination.

  • 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