273-318 rocker shaft differences

I am converting to adjustable rockers from a 273 and do not have 273 shafts. Will the 318 shafts work? I know that the 273 shafts have two small oil holes verses the 318 with only one larger hole. Also the 273 shafts have small oil grooves in the lower hole and the 318 do not. I understand that the shafts are different since the rocker arms oil differently. I just need to know if the 318 shafts will work. Thank in advance for the help guys.