Starting issue

Hey guys having a problem getting my stroker to fire up.
So I had car running but took off intake re sealed it etc. put it back together and it's not firing. I triple checked my timing making sure I was at tdc compression and rotor on dizzy was pointing at cylinder 1 .I have spark , I have fuel . This thing will not fire to save my life I've advanced timing a bit , retarded it a bit nothing sounds like it wants to fire but no dice. It back fires, and has a weird noise out exhaust I'm stuck now and exhausted my options and not sure what else to do any help would be great thanks guys