I get the same from the rear end on the 67. When I sawpped the brakes, I had to open the rear diff, 40 year old oil makes one hell of a racket, and it doesnt get quiter by replacing it. At least not after that long. I agree that you should check the rear diff.

 

Ok thank u guys!!! I'll let u all know if that solved the problem and if not get ready for some more questions haha!!

 

What makes you think its not the tires? it would be the most comon cause for a hum in a low mileage car. Since the car is so low miles the tires could be old but not worn. These tires would be **** to thread seperation and all other kind of age related issues.

 

They are not the original tires, the dealer I bought it from replaced them with cheapo's. Would crappy tires result in that humming maybe?

 

changed the rear end fluid and filled her back up with royal purple 75w-90 and the sound didnt change, friend said it could be that the tires are feathred or in a rare case the input bearing for the transmission