Tren... Your brochad and I have got yore back! We're on toppa this deal, just go have a new litter and relax!
Congrats to all involved in making this happen!
Yore 266 application uses "welded" rocker arms, onna nine rocker stand assembly. Those take pushrods with a socket on the rocker end, and a "ball tip" on the lifter end. 152, 266, and 304 pushrods for welded rockers are all the same part number.
Much later sv engines were changed to a five stand rocker assembly (cost reduction), and "stamped" or "boat-type" rockers which were also a cost-reduction thing. The pushrods for the stamped rockers do not interchange with the welded rockers...the stamped pushrods have a "ball" on each end. And the rockers shafts are different also, the five stand and nine stand rocker shafts cannot be interchanged at the component level, though an engine which originally had a nine stand assembly can have a five stand assembly installed if the proper pushrods are also used, and the four unused holes in the cylinder head "plugged" with proper bolts/washers.
Lifters for all the I-4 and sv engines are exactly the same though their internal components do not interchange (no one in their right mind wastes time in trying to "fix" hydraulic lifters even though the IH service manual devotes 10 pages or so to doing just that!!).
So yawl are gonna re-assemble the clean rocker shafts you currently have, and use the stands I'm sending you today. This will get it running again and with known good rocker assemblies, yawl are gonna take the long block back to the machinist so it can have the cam bearing installation and oiling system verified as ok or "no good".
The stuff I'm sending is simply so ya don't have to spend any more cash right now to get this bitch oilin'! If the cam bearings weren't installed correctly, then the machine shop needs to eat that deal and make it right! And this will eliminate any question, your current rocker stands are destroyed from what Chad has described to me. Therefore, the assemblies cannot oil.
Once all this is worked out and ya gotta motor that is ok, then I'd certainly advise that you not continue to use the current rocker assemblies which I know have significant wear on the pivot points on the two shafts. This is just a "test" deal and not a final solution!
Please...don't name the new litter "Scout"!!!