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Old Mar 1, 2007 | 08:50 PM
  #1  
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javier4.8
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From: Odessa TX
Default 4.8
what is the biggest head size i can put on a stock 4.8 bore.. i have a pair of ls1 heads
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Old Mar 1, 2007 | 09:01 PM
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4.8 has same bore as 5.3

https://www.performancetrucks.net/fo...d.php?t=386223
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Old Mar 1, 2007 | 09:10 PM
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so it would be possible to put a pair of ls1 heads without problems.. i have an 06 gm
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