Ford 331, V-8

331

Part
Number
IC9921
Compression Ratios

54-10.3
58-9.8
64-9.1
69-8.7

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: 11cc
Ring Packs

2-5/64
1-3/16

Pin Number

927x224K


Lock Ring

93



SPECIFICATIONS
Bore:4 Rod Length:5.4 Pin Diameter:0.9272
Stroke:3.250 Comp. Ht:1.17 Sizes:STD
.030
.040
.060
Minimum Clearance: Click Here To View
SPECIAL CLEARANCE REQUIREMENTS
 Crank-to-Deck Clearance:8.206 Weight
Piston / Pin:
425 / 132
NOTES
4 symmetrical valve reliefs and offset pin. Spacer ring included. Ring pt. no. 4000AM8. Kit no. IC9921KTM.


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