no, I don't have a factory rocker shaft now, I have Full rollers that get oil from the lifters ( kit uses SBF lifters ). the factory oil galley that used to provide oil to the rocker assembly is still open, and leaking cause I forgot to plug it, there is a restrictor plug in the end of the rocker shafts to keep up oil flow. if you look at denny's diagram, oil flows thru the stock rocker shaft, getting oil from the rear galley coming up, the galley comes right beside a bolt hole.