Originally Posted by MartinSTi05
This link shows what BC cams look like. Notice how much different they are from the Kelford/Cosworth AVCS cams. My bet is that Cosworth will tell you the cores are the same because they indeed are. Whereas they will not tell you about the machining because you can't readily see the differences/similarities in it.
That link shows what FACTORY STI cams look like. I have 3 sets of BC cams in my possession right now, and they look very similar to the Cosworth and Kelford Cams I've installed in the past. If you want pictures, I'll post them tomorrow when I get back into the shop.