I had this same problem last winter early spring with my car, not the same engine but it doesn't matter, ill tell you what i did and found, I had fuel, spark, compression. I started thinking it was timing that jumped, it wasn't, Then thought the carb was bad it was but, not the problem, I had everything i needed for an engine to start and it wouldn't. New starter, solenoid, Accel coil, cleaned all connections, new wires, plugs, cap, BUT when i put a new points module in and hit the key, boom, instantly sitting there idling, I also put a new relucktor in. Now i had spark, a nice blue spark and this is what happened, been running ever since. Seems you have tried everything, IF you haven't tried these, give it a shot. Mine to wouldn't pop, try, back fire nothing just like there was no spark OR fuel. Now before someone says the points module and or relucktors don't go out, this did happen so i know better or it was a very scary "why/how/ what was really wrong situation". regular points distributors use relucktors to, and they CAN go bad. If you change the relucktor which i think you should, take note how it goes in there (on Distributor), they are easy to put in backwards, one way is for SB the opposite for BB... If you have changed it and it was in wrong, the inside of your cap may show you because it would have burn marks in-between the contacts its supposed to spark on, you may want to check that. Hope this helps, Good luck.