Need help to identify this GM cam - LS1TECH - Camaro and Firebird Forum Discussion

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Need help to identify this GM cam

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Old 04-22-2010, 11:03 AM   #1
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Question Need help to identify this GM cam

Can anyone help me identify this OEM GM cam?

The numbers etched in the end are:

S 13

I've Googled them and searched the forum and found nothing.
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Old 04-22-2010, 01:36 PM   #2
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You should be able to figure it out with a pair of calipers. Just measure the lifts and compare the numbers to what cams GM offers. Dont forget to multiply the lift number by the rocker arm ratio
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