I am recently boring my cummins, i had a bunch of oil pourin out the blow by, and was wonderin if anyone had any experiences with going .040 over? Is it a good thing or bad thing? I also added in some new arp headstuds for the extra compression.

 

welcome to the site
check out this section your questions will be better answered here
https://www.dieselbombers.com/5-9-li...cummins-03-07/

 

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