Harbone

I have a supposedly well built (900 HP capabilities) TH400 that has a sllight whine at lower RPMs, 1800-2300, doesnt make noise at any other RPM, cars has a 3200 stall. mostly noisey at those rpms in 1st and second and just slightly in 3rd then goes away. no metal in the pan, fluid is spotless and not burnt. It also has a trans brake,reverse manual valve body and 3200 nitrous converter, trans has high perf clutches and bands,h/p heat treated sprags,increased line pressure, pressure tested case and deep pan. it doesnt act like it has anyproblems, shifts firma nd is not slipping. car has aluminum floorboards so i am sure that just makes it louder on the interior.

Is this a "normal" noise for a "overkill" tranny