It is supposed to be a McKellar grind but I cannot verify that claim. Would it have any value in my supercharged 389 SD retro project?? I've decided to take everyone's advice and use the 306 heads.
That is a McKellar #8 cam originally for a 389. It is very close in specs to the famous #10. I recently installed one in my 65 GTO. It is solid lifter. See cams down at the bottom of this list. http://www.wallaceracing.com/camcode1.htm