Plugs, wires, cam, lifters and timing chain are new, pushrods were all straight when installed, no vacuum leaks, compression is not great at 125 psi cranking, but is even. Cam break in went well, the engine idles fine, similar rumble to the last 360 I had with the same cam. I am going to try more timing adjustments, my balancer ring seems to have slipped as the mark is well off, and I will also look more closely at the linkage. The biggest problem I see is that I am trying to make a bunch of unknown pieces play well together while at the same time trying to undo all of the previous owners screw ups, and there are a lot of screw ups.I have been pulling wrenches for nearly 45 years, both professionally and as a hobby, have never encountered a problem like this before. Thanks for your help and replies.
