Pre 68 Dave you are saying the opposite of what was posted earlier...namely that the squeezed or pinched off tube was from 59 on whereas the previous post states 54 and 55. Either way my 56 motor with hydraulic valves has the dump tube oiler on it. G*d willing and a quick carb overhaul kit delivery should see the thing running for the first time since the rebuild: will be interesting to see what kind of pressure I get out of it.