In the past few weeks my engine has developed a backfire through the carb. I have an Edelbrock 1406 and run an Edelbrock 1721 fuel pump so I know the fuel pressure is correct. I've read where a weak coil can cause a backfire and was hoping someone could give me a few suggestions as to where I shoudl begin looking to resolve this issue. The coil I have is nothing special, purchased at a local parts store, and is about 2 years old. If you think the coil could be an issue could you recommend a good coil to purchase. I really think items at local parts stores are average at best. I've recently changed the points, condenser, rotor, dizzzy cap, new plugs and plug wires. The only thing I have left to do is to check timing. The dwell is set around 27.