Noisy in reverse

[Edthehorse]

I have a 73 duster 340 4 speed standard. Just bought it. I'm.getting a deep whirring noise in reverse gear but not In any forward gears. Any ideas what's going on?see video of sound. I jacked rear end off ground and put it in reverse. Doesn't do it with clutch pedal to the floor. Only when in reverse and moving

 

[Edthehorse]

I have a 73 duster 340 4 speed standard. Just bought it. I'm.getting a deep whirring noise in reverse gear but not In any forward gears. Any ideas what's going on?see video of sound. I jacked rear end off ground and put it in reverse. Doesn't do it with clutch pedal to the floor. Only when in reverse and moving

 

[446acuda]

Sounds normal. Reverse uses several straight cut gears and will whine like that.

 

[Edthehorse]

Ok thx