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KB Performance Pistons IC989.030

ICON Premium Forged Big Block Chevy 427ci Piston Set 4.280" Bore

KB Performance Pistons IC989.030

648-IC989.030

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Ships 01/25/17 if Ordered Today
KB Performance Pistons IC989.030 ICON Premium Forged Big Block Chevy 427ci Piston Set 4.280" Bore $681.60
Big Block Chevy 427ci Forged Pistons
  • Hollow Dome
  • 4.250" Bore (+.030)
  • 6.385" Connecting Rod
  • 3.760" Crank Stroke
  • -38cc Head Volume
  • Comp. Ratio: 10.8/119cc
  • 8/pkg

  • KB Performance Pistons IC989.030 Details

    Chevy 427ci

  • Dome Top Pistons
  • Use w/6.385'' Connecting Rods
  • Technical Specs:
  • Alloy: Premium High Ductility 2618
  • Bore: 4.280"
  • Crankshaft Stroke: 3.760"
  • Connecting Rod Length: 6.385"
  • Deck Height: 9.800''
  • Compression Height: 1.520''
  • Pin Size: 0.990'' x 2.750"
  • Pin Location: Centered
  • Effective Head Volume: -38cc
  • Intake Valve Relief: 0.275'' Depth / 2.420'' Diameter
  • Exhaust Valve Relief: 0.000" Depth / 0.000" Diameter
  • Top Landing Height: 0.340"
  • Ring Grooves: 1/16'' Top; 1/16'' Middle; 3/16'' Bottom
  • Gram Weight: 655/141
  • Compression Ratio: 10.8:1/119cc

  • Specifications:

    Manufacturer's Part Number:
    IC989.030

    United Engine and Machine Company is proud to introduce our new 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.

    Features:
  • 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

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