Hard Acceleration

There's a lot of things that could cause this. Carburetor, Basic tune up stuff. My gut feeling is Mechanical advance problem in distributor. If it was mine, I would start with a carburettor rebuild. Kit's are cheap. You could also pull the plugs and see how they look. Post pictures of the Plugs and we can look at them for you. Without more info we're just guessing but rule out the smaller stuff first. Check Plug wires, Cap, Rotor. Check for full voltage to Coil.