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Originally Posted by P@blo
Last two SPC-8 from rockauto this year were CWC cores. Figured more information is always helpful.
Great info Jay S
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You can check and see if what you have is a standard CMC Proferall cam core. My last SPC-8 that was a different core was in 2018. If you measure across the very top of the point of the lobe where it is machined, it will measure .56” on a standard CMC core (118600)that CMC currently sells.
All the cam cores say CWC on them. CWC cast them and CMC or EPC rough finish’s them. I think EPC has a wider variety of core offerings, I think they have a standard that is the same a CMC Proferall, and a better HC for Pontiac’s. They have P55’s also for other brands, but I have not heard of a P55 used for a Pontiac. I wouldn’t think CMC would source cores from EPC, but these days you never know.
From what I understand even off shore cores can have the CWC logo cast into them.