Tickin nose all the time

Ok heres the thing fresh 360 runs fine but has a constant ticking nose almost sounds like the valves need adjustment, but all are fine. But after adjusting for the second time on the 3rd time i noticed a lot of wear on all the push rods going through the head. seems to me that the push rods are to thick and are wearing against the head casting and cause the ticking nose. I'm using the stock 273 push rods and i'm not thinkin for going with a 5/16 push rod but i wanted to know if the stock push rods sole in Jeg's would work fine cup still that is. I'm lookin at the Comp cams push rod right now part number 249782116 but i thought the stock push rods where like 7.1 or something in that area. Well at least thats what i need any way form the comp cam pushrod length checker.