Put a Holley and headers on it!! LOL (you new that was coming)
My washer did the same thing and the vent pipe on the house had debris in it that lets air into your system! It was slowing down the flow of water letting lint build up in the system if the washer pipe fits tight in the out pipe it increases the problem! I added a vent for the washer only and never had another problem!
But that may not be the problem your having!