Can someone help me ID this cam?

It was ground by Cal Cams, numbers are 275-10-S 31A with the initials TJ. The solid lifters had an extra deep oiling groove, like REALLY deep. 1/4 inch or more. It is in great shape and was supposed to be pretty big. I'd like to find the spec's but I googled cal cams and all that came up were web cams of scenic cali beaches!