if a 350 olds here is the list of spec s for oil clearance rods .0009/003.4 mains 0008/003.8 i see rods 2.1238/2.1248 mains 2.9990/3000. housing bore rods 2.2495/2.2500 main housing bore 3.1880/3.1890 . saying that they did not check it just polished it is B.S i think .how would you know what size it was ? i like to know what i am polishing and were it at for size to start with i have been doing it all wrong tell me the year and the engine size .them posted are for the 350 olds. out of the ..bible.. federal mogul engine bearing shop specification manual