Anyone ever hear a Th350 torque converter (or pump?) \"sing\"? Beginning of the last trip out (Thumper's visit) my truggy started making a sound I've never heard from a vehicle before. Sounded sort of like a bird whistle in the area of the torque converter or trans pump. Mainly at idle or just above, then it would go away only to come back next time I dropped to idle. It seemed to be occurring at a frequency of about 1 per revolution just from looking at the converter spinning as I heard the noise. I had plenty of fluid, slightly over full in fact. I added additional fluid just because I noticed it “loosing prime” off camber and the chirp went away for about 15 seconds or so, then returned. /forums/images/graemlins/confused.gif. It’s now roughly 1 qt over full (any more and it would start puking) and still doing the same thing. Specs: Standard Th350 with (apparently) mild build and shift kit (bought used so I don’t know the specifics, works well till now though). Roughly 12-1600 rpm stall converter. Large stacked plate cooler and +3 pan with deep pickup. That’s about it... Any ideas?