Ok so i have a chevy 350 with a set of headers and a quadrajet carb. The motor wont stay running and bucks and backfires out the carb. or shoots a flame out the carb. I changed the carb to another one i know works off another 350 i have and the same problem. so its not the carb. I have played with the distrib and no luck. i had a friend look at it and he seemed to think it may need new plugs,wires,buttom and cap. when the motor dose get started it seems to run just dosent idle. so im not sure if its the timing. any pointers would be good!!! would wires and plugs make it buck and backfire out the carb???