Reworking the 273 Adjustable Rockers

(1) Remove the set screws and lock them in a drawer. You do not want to restrict the flow of oil to the heads.
(2) If you have the shafts with the 2 sets of holes. Put the rockers on the head with the spacers. No pushrods. Remove the adjuster screw. If you have already plugged hole on the push rod side. Then bend a wire and isert it in thru the adjuster hole to the shaft. Now rock the rocker arm back on the shaft and see if the wire doesn't go into the hole in the shaft. Mine do. your should too.
(3) Stay with the .100
(4) Where did 4 go?
(5) You are using a modified hydralic lifter with a curved face on a flat tappet cam. You will destroy everything you are working for. Put a hydraulic cam in place of the solid cam and the lifters will work.
(6) 1 thread is what is recommended
(7) you are lucky LOL



I want too see your oil pump and pickup

As I mentioned, I have never had a set of OE 273 rocker shafts. If you do what you are saying with a piece of wire and it goes through the rocker shaft and out the hole in the rocker with the rocker on the valve stem at your installed height, then you are golden. If not, it needs to be corrected.

And I agree 100% on NOT ever restricting oil flow to the rockers. Ever. The system is self limiting, especially as the rpm's get higher you have less time to get oil up there. When I am doing all out stuff I enlarge the feed to the cam, the feed from the cam to the deck and the feed hole in the head.

Never restrict oil going up to the head. It's a killer.

Thanks for the pictures. What I am saying is much easier pictured.