NEVER PUT NEEDLE BEARINGS ON A RECIPROCATING SHAFT. EVER.
Why would you want to copy the sorry crap the chevy guys had to use?
Find a rocker that has no needle bearings on the shaft.
Why does Harland Sharp and Jesal do that ?
I've assemble and built hundreds of motors with Harland Sharp needle bearing rocker arm kits with no issues ever
I have also learned the hard way to not put that type of rocker arms, Chineze or Harland Sharps, on stock rocker shafts, they will eat those shafts up and spread the metal chips through out the motor ruining it
