I installed a 700r4 tranny from an '86 firebird into my '84 camaro just recently. The new tranny works fine but I noticed this new whine that has come up. It almost sounds like the "first gear whine" that comes on all those old 3 speed autos, but it whines through every gear. Its not very loud, but its noticeable and its annoying. Any ideas as to what could be causing this?

did u check the fluid? and verify that its coming from the tranny and not the rear end or driveshaft?

Yes that was the first thing I did. It can't be the driveshaft or rear-end either because it does this in neutral / park also. Its definately coming from the tranny.

Perhaps a bad pump? Could also be the Torque converter. If its the Torque converter, the noise will go away once the TCC locks up.

Same thing that's happening with my tranny, I think. It "whines" through every gear, and in neutral - but not if the clutch pedal is down when I rev it. And my clutch is sticking. I don't know, you have an automatic....but "whining" is a good word to describe my sound, too.