(It's the GF's Auto 2005 Corolla it's a weapon )
Won't really sure till the Autopsy Joe, disabling the TC Lockup didn't seem to have much effect on the noise and it's very weird that it stops after 80Kph....
Was that the WOT shift 3>4 Erik?
Car has fairly tall tires on it 255/40/19's and 3.46:1 Diffs so that would probably be close.