ive talked to a lot of people about my 69 chevelle. it has been stuttering and stalling during acceloration. i replaced the power valve and it ran fine for a week then the problem returned. i had the timing done and rebuilt the carb and the problem still has not gone away. ive been told that it could be air in the piipes or something of that nature but i really dont know. if anyone knows what could be causing this please tell me. thanks