Whiny 727 transmission

[69rrvert]

I have a 69 Road Runner with a 727 auto. The transmission was re-built about 12 years ago and may have 5000 miles on it. I don't remember the mileage. Anyway, the car has been parked for the last 8 years. Everything about the transmission works fine. It has good firm shifts, goes into gear immediately, and seems to be working fine with no issues. The problem, is that is has a whine in first and second gear. No noise at all in drive. I did a quick search on here and seems it could possibly be the planetary. Haven't dropped the pan but the fluid looks good and doesn't smell burned. Anything else I should look for? I have a sound clip but can’t figure out how to post it. Thanks, Steven

 

[69rrvert]

Is there a way I can download a video clip from my phone so you can hear it. Thanks

 

[dadsbee]

Load it to Youtube or Facebook and share the link.. using the media icon..

 

[Michael_]

You could also use streamable.com as i already did multiple times

 

[oldkimmer]

One of the pinions is probably stiff and creating the noise. More than likely have to change one or both of the planetaries. There may be a cure in a can. Kim

 

[69rrvert]

Here is the link from YouTube. Thanks

 

[dvw]

I'd bet one of the planets is starting to eat a needle bearing shaft. Pretty rare. But I have seen it. You will find steel shavings in the pan as it gets worse.
Doug

 

[AR67GTX]

Mine whined a lot and I was told it was probably the planetary. I looked at the closely when I rebuilt it and found one that the back of the case had a lot of wear against the shim, causing excessive end play. I replaced it with a new one and now it’s silent. It may not have bee that particular wear that caused the whine and was something in the needle bearings but replacement fixed it.

 

[66Satellite47]

My bet is either a planetary starting to fail or the thrust clearance has real issues. My experience has been that a stock planetary holds up very well for a long time with Extreme use. However if the setup was not good to start with??