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Search took 0.00 seconds. Search: Posts Made By: Mike Davis
Forum: Pontiac - Street 07-30-2020, 06:46 PM
Replies: 16
Views: 3,546
Posted By Mike Davis
I just had a 69 4 bolt 428 block sonic checked....

I just had a 69 4 bolt 428 block sonic checked. It is already .070 over, it needs a sleeve and I will take it to .090. On the major thrust side it ranged from .210 to .220 on the minor it ranged...
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