340 issue after camshaft change

RustyRatRod said

I think it's a mistake just replacing the camshaft without finding 100% sure WHY you're having issues with it. ...and I'm not bein smart here, but what if it's an error on your part somewhere? Without verifying 100% what the problem is, you're setting yourself up for a repeat performance.

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I’ve had the engine apart 3 times now verifying installation. I’ve done valve adjustment 4 times now. I’ve verified that I’m not 180 degrees off as many times now. I’ve drained antifreeze 3 times now and will be disassembling it for the 4 th time in the future. I did not find anything glaringly wrong any time I had it back apart.
This engine should at least run ok without degreeing it. It doesn’t.
I do not have it in me to continue to troubleshoot this camshaft any longer. What’s wrong with it? I don’t know but I suspect it’s ground wrong or maybe it’s a marine camshaft and ended up in a auto box. I no longer believe this is an installation issue but a manufacturing issue.
The car is up on my lift with the cover on and I’m walking away from it for a while. When I get over the disgust, I’ll take it back apart and remove this camshaft and install a different one.
Thanks much