It seems at about 3000 rpm I get a rough vibration or growling noise. It had Flows on it and I thought it was the resinance and then also it has Piggy Back BBK underdrive pulleys and they were a little wobbly. So I change those out and it still is doing it. It seems to do it when I am on the Throttle and off the Throttle quickly. There is a point where I can hold the Rpm and it is worse. Running it below 3000 it runs fine. Check the Dipstick for metal and nothing.
Got any ideas?
Got any ideas?