273 adjustable rockers on a 360

I used the Crane rockers. What we did was to use new shafts and put in banna grooves at the oil holes. Then we used Smith Brothers adjusters. That way I was assured that the adjusters were hardened. The adjuster tips from Crane have a history of being made of a soft material and will wear down in short preiod of time. If you want to check for hardeded tips run them across a file. if you get metal shavings the tips are too soft.

Quote: hi, I do my own banana grooving on my shafts. you need a very thin cut off wheel, about 2" dia, mounted on a air die grinder, very carefully cut a small groove. it doesn't need to be deep. use low air pressure so you can have control of tool. go out enough to cover most of rocker area, do not go past . the original rocker shafts, had an oil hole on the back side also. the original 273 rocker had no groove in them. the comp rockers do have a groove.
i've used this homemade grooved shaft on a 340, turning 7000 rpm, have never had gauling or spalling. after grooving shaft, take 400 grit and wd 40, sand the shafts.