Merry Christmas!
I think I remember Jim Hand tried to have Bullet copy the Wolverine cam and there was something about it that they could not copy. I mentioned it in that other post. That cam was something they came up with at Bullet that was fairly close to the Wolverine. (Insert Paul K’s comment what is a few thousandths and a couple of degree among friends here)
IRC, that person behind that cam may have been John Partidge. I think Jeff is correct, it is still in the car.
Stan or one of the other guys likely knows more on core specs than me. But I think the .56” core width listed for CMC cores for Pontiac, IRC..is the width at the base circle where the cam core was roughed in at. It varies and is hard to measure. Whatever the width the core was over the nose will be the same no matter what the lift is. The base circle can get wider with a higher lift profile. If the core was from EPC the cam will have EP1 cast into it, along with CWC. EP1 will be cast into the opposite side as CWC. CMC core only have CWC cast into them, the cams from comp could be EP1’s. Comp uses a lot of EPC cores.
I think one of the SPC-8 cams I had that had the wider lobes is at a friends shop. I might be able to get some measurements off of it, I recall it had .560” width over the nose. If you compare that, with just rough numbers to a cam has .48” over the nose the narrower lobe is loosing about 20% of the contact area. If that is a general trend for cores right now, it makes a person wonder if that is another part of the issue with cams going flat these days.
I know of a Compcams 041 that went flat during the break in a few weeks ago. I”ll have to check with him and see if I can get him to measure the lobe width. I bet it is those narrow lobes. It had HLJ lifters, but got broke in with the single springs that come with flat tappet E heads and 1.65 rockers. Which was close to 280 lbs over the nose, 30 years ago the probably would have been fine.