I have a 1981 z28.. it has a 350 bore 30 over..now i qould imagine that i would have some power...but the car hradly moves when i floor the pedal...no faster than a honda i have replaced the plug wires and that helped quite a bit but i am still lossing power somewhere if u have any ideas what so ever please let me know thank u

 

Power is made with air flow. What heads, what intake, what cam? Carb?