I had rocker shaft on a Buick aluminum 215. Just thought I’d add somethingSo this happened in the Bu. I see they're not full shaft rockers. But still, Harland-Sharp? Not a good thing! Never had problem with regular rocker studs in my Poncho's. But did have problem with rocker shafts in my 425 Buicks.
Too bad you had to regrind it. Looked like it would have worked on my blower motor "REAL GOOD".Hopefully I get back to the track in the next couple of weeks to see how last winter’s suspension mods work along with the slicks.
Once it’s dialed in then on to the next mod. I finally found a steel roller cam core and it’s being ground now. Current lift is 0.608”. New is 0.662”. Current duration is 235/243. New is 256/256. I ordered it 110+4 LSA. Should haul ass.