Now I'm totally confused? I didn't want to grind, shim or drill anything. I just wanted to bolt them on a relatively stock engine and go, without wrecking anything. I may have to rethink, and maybe stick with the stamped steel stuff. They seem to go forever.
To simplify it, Adjustable rockers with a mild hydraulic cam are really unnecessary. They don't really improve performance they just give you some adjustability.
