I just replaced timing belt and counter balance shaft. And I was wondering if I didn't line up the oil pump sprocket would that cause a vibration sound. Every thing is lined up pin perfect, but when the car get anywhere over 3k rpm it starts to vibrate. Driving or in neutral

 

Did you really replaced the counter-balance shaft?
And yes if the c-b shaft not lined up correctly against the crank angle it will cause vibrations.

 

Thanks everything is lined up perfectly, I just took everything apart to make sure again and everything is mint, just don't know why it was vibarating? I'm gonna start it up in a few minutes to see if it still makes the sound