If it's popping and backfiring you may have some plug wires out of order. The most common mistake is going the wrong direction around the distributor cap. That would make it fire on two cylinders, 1 and 6 most likely, causing the popping and such.
1953 Chevrolet 3600 Fried Green T'mater (Vern) In the Stovebolt Gallery Caution: Political Statement Man who runs in front of car gets tired, man who runs behind car gets exhausted.
