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Rocker numbers

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Old 11-25-2018, 07:13 PM
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Default Rocker numbers
I'm doing a valve job on my 2003 LM4. While cleaning the rockers I noticed numbers cast on the bottom side of the rockers (example B1, G6...etc.). Any idea what the numbers mean if anything?
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Old 11-25-2018, 10:19 PM
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probably the number of the die they used to punch the part from metal dust into a rocker before sintering
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