Comp cams xe268h for 318

Speaking of cam bearings I have a question the cam bearings i have i looked the part number up and it says 67-79 la engines did something in the la cam bearing change after 79? Maybe an extra oil hole or something? Those bearings where leftovers from the 67 318 I put together I bought them and didnt use them. Will they not work for a 86?
I don't really know but perhaps it had something to do with the change on the cam snout around that time. Become aware of that difference too when it comes time for the cam.