What Rocker Arms Are These?

PRH said

In the instances I’ve seen them be a problem, it’s been one rocker welding itself to the shaft.
The other 15 are still perfect......... as well as the shafts, in the other 15 positions.

It also took a period of time before they had an issue.
A couple of seasons of regular bracket racing.
The first one I chalked up to “**** happens”, after the second one(different engine), I decided I wouldn’t be running them with roller cams anymore.
The third one was being run with a SFT cam with beehive springs, and had seen a lot of racing and probably 10k street miles before it had an issue.
I blamed that one on the oil.

Click to expand...

Must have been pure luck because thinking back... I do remember the talk about them scoring and galing the shafts... I had also had the induction hardened shafts from Dvorak from when I was running the needle bearing rockers in 2005... I came across a set of comps in Murietta that were like brand new with shafts for two hundred bucks. When I went to use them first on a solid flat tap it....they fit a little bit loose on the shafts so I decided to use the induction hardened shafts that fit much nicer and weren't sloppy ...I'd say they're at least 3/8 wall shafts. They take a tiny core plug. To this day they still look brand new ...best damn rocker shafts I've ever bought in my life.