Chevy 409, V-8

409

Part
Number
IC959
Compression Ratios

11.0

Quick Reference CR

Enter your Cylinder Head Volume for your approx. Compression Ratio.


This ratio is calculated using a .030 oversize only.



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W-Head
Effective Head Volume: 89.1cc
Ring Packs

2-1/16
1-3/16

Pin Number

990x300K


Lock Ring

PRG110-3



SPECIFICATIONS
Bore:4.3125 Rod Length:6.01 Pin Diameter:0.9898
Stroke:3.500 Comp. Ht:1.807 Sizes:.038
.048
.068
.078
Minimum Clearance: Click Here To View
SPECIAL CLEARANCE REQUIREMENTS 		 Crank-to-Deck Clearance:9.6 Weight
Piston / Pin:		767 / 141
NOTES
Centered pin. Oversizes based on stock Chry 440 ring sets. Ring set pt. no for .038 oversize uses 4320BD9.030, .048 oversize 4320BD9.040, .068 oversize 4320BD8.060, .078 oversize 4360BD8.035. Kit no. IC959KTD.
Forging blank R173.


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