Need help understanding Mopar ignition…no spark

I did some further testing and actually had a weak spark to the plugs with the Mopar ignition. I had on old GM HEI here and did the conversion. Now I have a strong spark to the plugs and the car still wont start, just cranks. I can see fuel squirting when i move the throttle so now I'm stumped !! I pulled a plug and grounded it out to verify spark. Ugh!!