I would guess pinion bearing Bryan. More of an option A problem (slow death). The real killer though, will be to your wallet when you rebuild the transaxle. Overhaul costs will increase the longer you wait. I drove one for 100k miles with a whine in it before it was my turn to whine.

Angus

> On Aug 2, 2015, at 6:59 AM, B Feddish <uprightbassghost@HOTMAIL.COM> wrote:
> 
> 
> 
> I’ve got an issue with a high pitched noise from the back.  The vibrations in the noise are directly related to speed and do not change when I shift from 3rd to 4th (about the speed at which I hear it).  It does go away when I press the clutch in and coast so it is only happening when I have my foot on the gas.
> 
> 
> This is a new one for me, what could this be? It it the tranny getting ready to go? If so, how long have I got? Is this a slow death thingy or clunk clunk stranded thing? Or is there something else I should look at.
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> 
> This is an 83.5 wc Westy BTW.
> 
> 
> Thanks,
> 
> Bryan