NOS ZL1 Cam
I am looking at an NOS ZL1 cam. The GM tube is dated 1971 and the part number 3959180 along with ZL1 2nd Design is written on the tube. The cam looks original and new but the number on the end of the cam is 8911 which from what I read on the internet, it is an L88 cam, not a ZL1 cam. Any idea?
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