Reworking the 273 Adjustable Rockers

Thanks for the oil pump info.
I think you mean 23/32.

With your idea here is what I have come up with so far. Using a 11/16 drill and a 1/2npt tap.

The tube is a Small Block 727 dipstick tube. still working on it. Might cut the end off of the Milodon tube. Thread it put it in the coupler and weld it.