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Vehicle Info NeededUNITED ENGINE MACHINEPART NUMBER: 648-IC989.030
ICON Premium Forged Big Block Chevy 427ci Piston Set 4.280" Bore
$86287
Ships on 09/14/2026
Lowest Price GuaranteeChevy 427ciDome Top Pistons Use w/6.385'' Connecting Rods
- 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
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
Part TypePiston
BrandUNITED ENGINE MACHINE
Package Height4.0
Package Width6.0
Package Length9.5
Weight15.24 PG
Part CategoryPerformance Parts
Part FitmentSemi Universal
Vendor Part NumberIC989.030
Package Qty1
Package TypeEA
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