Reworking the 273 Adjustable Rockers

Mattax said
Could have been the oil pickup not being against the bottom of the pan for the first year or so.
But this is from the Taylor and Hofer How to Rebuild Your Small Block Mopar.
View attachment 1715308749

Feel free to disagree. All I had at the time was that and the shop manuals.

LOL... the wear from the stamped rockers in that pix is on the under side of the shaft where they press upwards on the shaft.... and where the holes are shown in that pix. Obviously wrong text with that pix. No wonder folks get it wrong from time to time if that error is out there in print.

Jadaharabi said
If you're making your rocker arm shafts for the adjustable rocker arms don't forget to put the second hole in the shaft. You can see it in that picture that is posted showing the slots.
According to Yellow Rose those holes from the factory are in the wrong spot so this is a perfect time to line them up where you want them to be and then drill.

I recall that thread info... and wonder about 1 thing. These shafts don't see much pressure, and are not filled to the brim with oil at the lower RPM's. YR was wanting to fix the high RPM starvation of the cups where he ran his stuff, and lining up the shaft holes where they could intersect the rocker cup oiling holes at some point in their motion. But, for extended low RPM operation, I am not sure it makes any difference.