No start, fresh rebuild, help anyone?

Sorry been out working on drywall all day at a friends house... Thanks for all the replies. I am going to start going through everyone's advice.

The bearing should have been replaced, everything was done at the machine shop. I will check the shaft to make sure it is straight. I did soak the lifters in oil and made sure they were good and lubricated. I did run the oil pump to build pressure, maybe should do again after all this cranking, because everything is brand new inside... Don't want to kill my cam already...

I believe I lined everything up correctly on the timing chain, but that was at least 6 months ago. I need to do a compression test, that will probably tell me. A little oil may help.

On my first attempts at starting I did get a fireball out the carb. But I have not had that the last few try's not sure if that is bad or not..... This week I should have more time. I am going to call my mopar buddy over again and troubleshoot again.

Being my first build I have been a bit nervous on breaking something, hopefully I haven't caused any major damage, guess that's how you learn... I just want to hear that 340 run!!