To the people mentioning breaking in a 235 cam; is that advise for some aftermarket cam, or a stock cam?
Cam break-in was something us hotrodders learned the hard way when we began using heavy-pressure valve springs to prevent valve float at high RPM. Back in the late 40's/early 50's it wasn't as big a problem because cam profiles and spring pressures weren't as radical. Recently, it's become more of an issue due to most oil refiners reducing or eliminating the zinc compounds in their motor oil that used to protect flat-tappet cam lobes. Today's roller cams don't stress the lobes nearly as much as the scuff action between a flat tappet and a cam lobe.
It might be OK not to run-in a stock stovebolt cam, but I'm not going to take that chance when the first 20 minutes or so of operatin can be done at 2K RPM and avoid the problem altogether. I also don't bet my life on bargain brake jobs, or draw to an inside straight. I'm not that much of a gambler!
Jerry
