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United Engine Machine Chevy 383ci Hypereutectic Pistons Flat Top

United Engine Machine KB100.040
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648-KB100.040

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United Engine Machine Chevy 383ci Hypereutectic Pistons Flat Top $293.99
Chevy 383ci Hypereutectic Pistons
  • Flat Top
  • 4.040'' Bore (+.040'')
  • Use w/5.700'' Connecting Rod & 3.750'' Crank Stroke
  • Comp. Ratio: 11.9/58cc; 11.3/62cc; 11.1/64cc; 9.7/76cc
  • 8/pkg

  • United Engine Machine KB100.040 Details

    Chevy 383ci

  • Flat Top Pistons
  • Use w/5.700'' Connecting Rods
  • Use with Chevy 350ci Block and 400ci Crankshaft
  • Technical Specs:
  • Alloy: Hypereutectic 390
  • Bore: 4.040''
  • 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: -7cc 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: 500/145
  • Compression Ratio: 11.9:1 w/58cc Heads; 11.3:1 w/62cc Heads; 11.1:1 w/64cc; 9.7:1 w/76cc Heads
  • Use with 350ci block and 400ci crankshaft. This is a stroked 350ci chevy combination.

  • Specifications:

    Manufacturer's Part Number:
    KB100.040

    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

    Items You Need
    Some parts are not legal for use in California or other states with similar laws / regulations

    Motor Vehicles

    WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.

    Tools:

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    Electrical Cords

    WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.