Engine shakes violently

What is your question?

If im driving locally under 45MPH if I try to gradually speed up enging shakes violently if i let go of the gas it smooths right out but if i am going on hiway getting up to seed quickly no problem unless I slow down and then try peed up slow it will vilently shake but if I stomp on the gas no prblem shaking have change air filter K&N oil change spark plugs and wires I was told ball joints so am replaceing those thanks