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Engine Piston Set | IC789.100

Closed chamber design. Centered pin. Edelbrock and OE heads. Does not fit Mark 6 heads.

ICON Forged Piston - Chevy 489 Rod 6.385 cc Hollow Dome -20cc 1V

PDF Documents
Icon2618_Ins.pdf pdf Installation Instruction

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Product Specifications
Sold As Complete Piston Set
Engine Manufacturer GM
Engine Family Chevrolet BB V8 Mark IV
Eng. Disp. In. 489
Eng. Disp Liters 8.0
Year Range -
Piston Material Forged 2618 Alloy
Bore Diameter MM 108.0
Bore (in) 4.25
Bore (mm) 108
Rod (in) 6.385
Stroke (in) 4.25
Rod (mm) 162.179
Stroke (mm) 108.0
Oversized Yes
Oversize .100
Ring Pack 1/16, 1/16, 3/16
Top Land .336
Pin Number .990x2.750
Pin Type Press or Floating
Pin Configuration Centered
Pin Diameter (in) .990
Pin Diameter (mm) 25.1
Lock PRG110-3
Compression Height IN 1.27
Compression Height MM 32.3
Crown Type .210" HOLLOW DOME 1V
Crown (cc) -20cc
Intake Valve Depth/diameter .285/2.300
Alloy Forged 2618 Alloy
Compression Ratio 96.5-12.7, 115-10.6, 119-10.2
Oe Deck Height 9.8
Oversizes STD .030 .040 .060 .070 .100
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