Car has no power, electronic or carb issue?

My 318 is brand new, using the summit electronic ignition kit (orange box) and a blaster coil. The car starts and idles good, but seems to have no power and will not rev over 3500rpm. I tried swapping out the ign box with another aftermarket standard box, with no change. I am running a 670 holley, and 31* total timing which seems to run the best even as it is. The carb was a used one i picked up, and other then setting the idle mixture screws back to stock, i have not changed anything. I brought it to work today, and on the highway(100km/hr) the pedal had to be on the floor, and car sat at around 3200 most of the way. Any suggestions?