Anyone had any issues with cam bearings pitting/fatigue after 2000 miles/30 passes , got this same problem on the 605" (solid roller) & 512". (hyd flat tappit.

TIA.

I have seen that(pitting) in stock motors that had a lot of miles on them, what oil are you using? I have also seen flaking in the cam bearings when used in a high RPM motor with a lot of spring pressures. I'm probally going to try the caged needle roller cam bearins on all of my serious motors with roller cams and high spring pressures from now on.

no, are you sure the "pitting" isn't embedded debris? do you have any pictures?

We have seen pitting like Drams says form debris,also if some one use sand paper or crocus cloth or sanding flapper wheels to clearence the bearing the grit get in the surface and pits it all to hell,that's why we usually cut bearings or use Scotch pad type of material to touch them up.

Both these engines use valvoline/kendall 20/50 , both have an issue with #2 cam bearing , both engines had bearings fitted @ different machine shops , the 512" B engine is pitted @ the centre of bearing & the 605" pitted & both edges.

Sorry , no pics.