273 Rockers on a 1971 340
According to yr if you lineup the hole in the rocker arm and the shaft, oil will squirt out. That is a high on the shaft hole for oil to squirt out of not a low dripple out hole.
I don't recommend the op over slotting the shaft to the point of leaking out the side at the bottom.
It will if the volume is there. I have some OE shafts in the shop and some brand new W2 shafts out there I need to take some pictures of and post in that other thread. I keep forgetting about it.
Technically, and this was from the MP people I talked with in Seattle at the Nationals in 1990ish, if the rocker has the oil feed hole where Chrysler says it should be (it should break through the rocker just under the adjuster pad) then the 9/32 adjuster setting is correct for any rocker.
If you adjust the adjuster to that number, you'll see the relationship between the adjuster, cup on the pushrod and the oil hole in the rocker. When it's correct, the oil should squirt out of the feed hole and hit the reduced diameter of the adjuster and run down into the cup.
This only happens if the hole in the shaft lines up with the hole in the shaft, and the volume is there to do it.
I've had to repair OE Hemi shafts that had the oil feed holes in the wrong location. 3 different shops missed it. Couldn't keep the adjusters in it until it was fixed.
The W2/5 shafts are all wrong. If they come from Chrysler, the oil holes are off on every shaft. Chrysler knew this, and didn't bother to release a bulletin to fix it.
