I need to tune my truck up. I doubt I will be able to get it into the garage that my buddy runs/owns due to my work schedule. So after work each night I will be puttering on my 82 to get the exhaust on and tuned up. It has a holley man choke (still need to get a cable for it...) think 600 cfm. It slightly backfires sometimes when ya get on it hard or let off too quick. It looked a little damp when I remopved my plugs, so I thought maybe too much fuel. I need to also take one of my timing lights to it to see where it stands on the timing aspect. I do not know how to tune the holley, and think maybe that needs to be done. Any tuneup advice very much welcomed!