Reworking the 273 Adjustable Rockers

Rapid Robert said

Jad, OK, plug top hole. drill .125 hole aimed right at valve tip. close outer side hole on adjuster side. grooves/hole in middle of groove goes down with that hole slightly offset toward valve side. Good so far! Last question (I promise!). Are you saying there are additional holes in the shaft 90 deg to those grooves/holes that are already on the bottom? I dont think I seen em and you did say to drill NO holes in the shaft. (just wanting to confirm). If so I'm good once I do your rocker mods & leave the shaft as is. Holler when you can. RR

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My picture with the drill inserted shows, I aim at the rocker arm tip in the center of the pad. With the grove at the bottom, my shafts have a hole at the pushrod side 90 degrees from the bottom. I did not drill this second set of holes an they appeared to be factory or professionally drilled. If someone has done them by hand they are excellent with a hand drill or press The shafts came that way with the rockers used.

So I guess I will tear apart my motor an get you some pictures of them this week if I can. While I'm at it I will check the hole alignment in relation to the pushrod oil passage.

Did you take out the adjuster screw an look in where the oil passage an the machining hole are in relation ship to the bottom thread?

Something else to consider is the fact that under load as the rocker is moving the oil will work it's way around the shaft to the oiling holes.