just rebuilt runs bad

At this point maybe you should look at something else.
If would appear that you have ruled out the ignition if it won't run with just the point distributor, although without a ballast resister it will burn up the points in no time.
You need to make sure your cam was installed properly and it can be done without taking it apart. It should be accurate enough
That cam's intake valve should be opening about 34 deg before TDC on the intake stroke.
Pull the valve cover and while rotating the engine manually stop as soon as you see the #1 intake valve start to open and stop turning the engine. Go slowly.
Look at the balancer and measure to see how close to 34 deg BTDC you are sitting. It should be close.
If it's way off the cam is not in correctly.