R3 tall deck 426 Victor Heads

You only get a squirt when the cam hole lines up with the hole going to the rockers ?
Unless you have a modified cam bearing or a groove in the cam to oil full time ?
There is no holes in the cam it was is a solid roller babbit bearing blank ground up by Crow cams in Australia he said it would be a nightmare working out the angles & too oil through the back of the heads into the rocker arms