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What is the valve lash for an 04 cummins.

Just installed the hamilton #110 springs.

Do you check under one side of rocker or both sides to equal the amount of lash needed?
 

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I got the Early 2004 with Hamilton #110 Springs just like you. Here are the specs I did mine with a feeler gauge.

.010 Intake .020 Exhaust
 
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