What year is it? My brother had an 83 SS 440, that was very quick. Is it doggy, or just slow? If its doggy at all, lean it out abit(the fuel/air ratio) NOT gas/oil ratio. And what is the 340 sled? haha, displacement doesent mean anything, line an old TX 340, T'NT 340, or Blizzard 6500/7500(340l/c) a...