View Full Version : Need help to identify this GM cam

Hans Grüber
04-22-2010, 11:03 AM
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.

04-22-2010, 01:36 PM
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 ;)