Hy 73scoutcrawler, are you trying to re-assemble an engine that you took apart, or are you trying to assemble a bunch of parts that were never a running engine? In my parts book I can find four different part numbers for pushrods, and that is just for truck engines, I'm sure there is at least one more for the car engines equiped with hydraulic lifters, I think by the sound of what you're describing is happening, that you have a mismatch of parts.
