Chevy 489, V-8

489

Part
Number
IC9952
Compression Ratios

119cc
-
10.5:1

Quick Reference CR

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This ratio is calculated using a .030 oversize only.



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OC Solid Dome
Effective Head Volume: -23cc
Ring Packs

2-5/64
1-3/16

Ring Sets

4250AM8



Pin Number

990x224K


Lock Ring

98



SPECIFICATIONS
Bore:4.25 Rod Length:6.385 Pin Diameter:0.9898
Stroke:4.25 Comp. Ht:1.27 Sizes:STD
.030
.040
.060
.070.
100
Minimum Clearance: Click Here To View
SPECIAL CLEARANCE REQUIREMENTS 		 Crank-to-Deck Clearance:9.8 Weight
Piston / Pin:		597 / 158
NOTES
.202" open chamber solid dome, designed for OE 119cc head. Spacer ring included. Ring pt. no. 4250AM8. Kit no. IC9952KTM. Optional ductile ring set 4250AD8.


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