OMG need help fast

ok question is : my 318 is popping in the carb under load, runs ruff at an idle, i have replaced every part of the ignition system, checked for fuel it is getting plenty, rewired the distribitor twice just to make sure im not crazy,and no change?????? keep in mind the auto was under no disstress when this started.... any ideas....? please help fast as for this is my daily driver .:snakeman:

my 73 318 did the same thing and it was a worn cam lobe. just started all the sudden. good luck