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United Engine Machine IC998.STD-1

Chevy 427ci Forged Piston Hollow Dome Top

United Engine Machine IC998.STD-1

648-IC998.STD-1 NEW

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United Engine Machine IC998.STD-1 Chevy 427ci Forged Piston Hollow Dome Top $107.99
Chevy 427ci Forged Piston
  • Dome Top .650 in. (-43 cc)
  • 4.250 in. Bore (Standard)
  • Use w/6.135 in. Connecting Rod & 3.760'' Crank Stroke
  • Comp. Ratio: 11.4/119cc
  • Sold Individually

  • United Engine Machine IC998.STD-1 Details

    Chevy 427ci

  • Dome Top Pistons
  • Use w/6.135'' Connecting Rods
  • Technical Specs:

    • Alloy: Premium High Ductility 2618
    • Bore: 4.250''
    • Crankshaft Stroke: 3.760''
    • Connecting Rod Length: 6.135''
    • Deck Height: 9.800''
    • Compression Height: 1.765''
    • Pin Size: 0.990'' x 2.750''
    • Pin Location: Centered
    • Hollow Dome Top: .650'' 43 cc Open Chamber Head 118cc and larer)
    • Intake Valve Relief: 0.275'' Depth / 2.420'' Diameter
    • Exhaust Valve Relief: N/A
    • Top Landing Height: 0.360''
    • Ring Grooves: 1/16'' Top; 1/16'' Middle; 3/16'' Bottom
    • Gram Weight: 718/141
    • Compression Ratio: 11.4:1 w/119cc


    Manufacturer's Part Number:
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    United Engine and Machine Company is proud to offer the Icon line of forged pistons. Icon brings the same quality and performance you've come to expect from other United Engine brands while adding a new lightweight forged design. No matter your high performance application, there is an Icon piston for you.


    • High ductility 2618 alloy
    • Perfect for Nitrous, Turbocharged and Supercharged Apps
    • Dual forced pin oiling on most applications
    • Lateral gas porting on higher compression ratios
    • Fully machined with deep valve pockets
    • Second land accumulator grooves
    • Top land mini groove technology
    • Diamond finished skirts
    • Triple wound spiral locks
    • Spacer rings included in short compression heights that intersect the wrist pin bore
    • 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