OK, I got the crank pulley replaced, timing marks are where they should be, minus the cams are off by just a couple of degrees, but the noise persists. It sounds like a rod or main, but goes away when: You let the clutch in-noise almosts disappears, noise goes completely away between 1K-3K RPM, reapears at 3K, then disapears at 3.5K, but engine won't rev above 4K. I got it above 4K briefly, noisey, and surged a bit. The noise reappears directly after accelerating when the gas peddle is let go of, will go away when clutch is pushed in. Even if clutch is in, noise appears at 3K RPM and above. What is going on?