Thread: How much can you over-bore a 389
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Old 12-12-2002, 10:26 AM
61man 61man is offline
Chief Ponti-yacker
  
Join Date: Mar 2002
Location: Kennesaw (have to own a gun city) Ga.
Posts: 654
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I'd look for a new block, It sometimes runs hot at .060, I wouldn't want to go bigger,

http://kurtspontiac.homestead.com/Pre1964Pontiacs.html

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