Chevy 489, V-8

489

Part
Number
IC9951
Compression Ratios

96.5-10.2
105-9.6
108-9.4
119-8.7

Quick Reference CR

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This ratio is calculated using a .030 oversize only.



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Flat Top
Effective Head Volume: 2.4cc
Ring Packs

2-5/64
1-3/16

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:		527 / 158
NOTES
Spacer ring included. Ring pt. no. 4250AM8. Kit no. IC9951KTM.


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