340 issue after camshaft change

I’m back to head scratching. After using RustyRatRod’s method to adjust the valves, I felt pretty confident that it was done as close to right to at least get the engine running and break in the camshaft. It sputtered and backfired at first but I did get it running. It would not stay running on its own without keeping the gas pedal partly depressed. I played with the distributor a bit looking for the sweet spot to get it to at least idle. That did not happen.
Back to the beginning to ensure I had the distributor in correctly. Remove spark plug number one and crank the engine looking for the compression stroke. What do you know, no compression in cylinder number one. Put the compression tester on it and confirmed no compression in that cylinder. Rotated engine to what’s suppose to be #1 TDC and valves are closed.
I don’t want to make this too long winded but I’ve been a mechanic for a long time and have never encountered anything like this. I am convinced this camshaft is ground wrong! It’s coming out. I had a perfectly fine running car until this swap. I’m done with this cam, period.
So, with that said, I’m looking for suggestion for a nice street camshaft. I’d like some lope and am not concerned about gas mileage. Also, not looking to make it un streetable. What are some good camshaft suggestions?
Can u explain to us exactly how u adjusted the preload? Did u pump up the lifters with oil? U got to be missing something. We want to help u!!! Don’t give up yet. Kim