Reworking the 273 Adjustable Rockers

Jadaharabi said
There is no drilling of the shaft. My shaft has the banana groves and 90 degrees from that on the pushrod side is a hole.

The only hole I'm drilling is the one under the arm on the valve side. it is 1/8 inch and is drilled at an angle to the tip.

No drilling on the push rod side. The hole is the correct size for the #8 tap. I do not tap all the way thru. I only cut 4 or 5 threads. I bottom out the plug against the adjusting screw.

To repeat I am not drilling into the shaft. On the push rod side I'm just plugging the outside hole to stop oil lose.

On the top I'm plugging that hole to stop oil spraying the inside of the valve cover top.
Then I drill one hole under the arm angling up to the tip of the arm.
As I have said this is how the W-2 rockers are setup from Mopar.

And as I have already posted at length, the holes in the shafts are in the WRONG location on W2/5 heads. They are off by a mile. You can groove all you want, but at a certain point (depends on spring load, cam lobe design, rpm etc) you MUST relocate the oil holes.

I have done roughly a dozen Gen II hemis and EVERY SINGLE ONE OF THEM HAD THE OIL HOLES CLOCKED WRONG. Every one of them had OE rockers and shafts.

And depending on the rocker, the oil hole is off on Pcar heads too. I just had to fix my personal shafts. They are drilled for hydraulic valve gear. So there is no oil hole in the correct location.