Somewhere in this thread it seems you have come to the final conclusion that you bought a hydraulic cam and hydraulic lifters.
It makes a difference. A big difference.
99.9% of the people try to spin the push rod to find zero lash screw it up. Even if you try to pre-oil the lifters, the spring inside the lifter is so soft, it is extremely difficult to feel the difference between zero lash and a half a turn or more below. The most common result of spinning the rod method is bent push rods.
DON'T USE THIS METHOD.
Just hold the end of the rocker with your fingers and slap it against the valve stem while you tighten the rocker nut. When the clearance goes away, you have "zero lash".
Most service manuals that tell you how to adjust hydraulic lifters on a I6, say to set cyl #1 at TDC and adjust specific valves. Turn the crank one turn(360 deg) and adjust the rest. For stock cams or near stock, that works just fine. A bigger cam means you need to start at TDC for #1. Turn the crank 120 deg for each cyl and follow the timing order.
