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ICON Premium Kit | IC789KTD.070

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

1 Set IC789.070/1 Set 4250BD8.070

PDF Documents
Icon2618_Ins.pdf pdf Installation Instruction

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