will not start!!! plz help!!

I have a 1972 chevelle super sport, the whole car was rebuilt (by someone else) in 1994. The origanal 454 was taken out and a custum crate motor was installed in its place, it has 12.5/1 compression ratio and a huge cam basically tricked out for the strip. The car only runs on 105+ race fuel but one day we could not get there so we used pump gas and additive when we got home and shut it off it detinated really bad and from then on would not start, there are other factors we trailered the car down to georgia from tn and had a hard time starting it when it got here but it ran good so we went on. also it seems that the car is not getting spark at all it completly floods the engine even with the fuel pump off and it doesnt even hint to start ever all the spark test that we have done have come up with no spark!

things that i have tried-
-new spark plugs
-new points & condensor thing
-new accel super coil and balist resistor
-i even tried hot wiring the ignition system just to see if it would start and there still wasnt any spark!
-the cap and rotor have less than 500 mi on them but could they cause this?

sorry this is so long! any help would be great!
thank you!

timing chain, Question? why are you still using a points distibutor?

what should i change it to? i have thought about it but when i did it still worked so i wasnt going to change it.

thanks!

You could go with lots of electronic distributors GM Pro-Billet distributor is decent, definetly a good idea. At high RPM's you can get float with points, you don't have to wory about that with an electronic system. You might try PMing Redneck383 and asking him what he thinks it is, that is if you still can't figure out the problem.