When I take my 1970 SS 396 Camaro for a weekly drive it makes these noises in the rear of the car when I am at a stop. The other day, when I was stopped I put the TH400 in neutral and the noise stopped. I am stumped. How can there be noise when the car is stopped, Nothing is moving from the end of the TH400 transmission, the drive shaft, the rear axles, and wheels. Also at high high speed I get a squealing noise which sounds like it is coming from the engine compartment. I did not check to see if the fan belt PS belts are loose. Any help would be appreciated. John.