What camshaft should I use?

RustyRatRod said

Well goddammit, SOMETHING ain't right. You can go on and on about how your crap is "right" or "new" or whatever the hell else you want to call it, but if it's getting 10 MPG like you said something is WRONG. You're just gonna have to dig through it like any of the rest of us and find it. There's no magic bullet like you might want to believe, you're just gonna have to find it. With a little more info, we might can help, but YOU are the ultimate power here.

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I’m tell you what has been done because someone will eventually ask what has been done. I am trying to give as much information as possible, but if there is something that I missed, let me know.

I know there is no magic fix to it, but I have replaced a lot of worn maintenance parts. I can’t think of anything in common that is in bad condition that would cause this. It seems to be an issue with cylinder 6. I unplug it and the engine runs smoother. All others unplugged one by one result in a rough idle and the engine bucking and shaking.

If it were the distributor or anything before it, the misfire would be random. I can only think of the issue being a mechanical one related to cylinder 6 because it had a strong and consistent compression test.