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IF they are pessed in why is one larger from the rest? this is a rebuild, the rocker arm middle will not go over the stud all the way and I checked it with the others it works on every one ?
Most likely scenario is where one of the factory pressed-in 3/8" studs had broken, and a machinist had drilled and tapped it for a single 7/16" stud, which is totally assinine since nobody sells rocker arms one at a time.
Some aftermarket heads use 7/16" studs, like World's Windsor Jr's, but 3/8" is pretty standard. It's not as important which one you have as it is to have all 16 of the same stud. You could possibly heli-coil that threaded hole so you could put a 3/8" stud back in. TK
THANKS FOR THE INFO GUYS so if the stud is pressed in over sized if you will, couldnt I change the small half moon I duno what its called,in the rocker to the bigger size to fit over the rocker stud? WALTER JOHN