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A833 slight whine on decel #2462589
03/07/18 03:03 PM
03/07/18 03:03 PM
Joined: May 2005
Posts: 2,628
Middle TN
da50r Offline OP
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da50r  Offline OP
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Middle TN
Bought a used a833 that was very clean from a reputable parts seller in the industry. Popped the side cover and it looked nice and clean. I put new o rings, front bearing seal, and tailshaft seal. I got my trans seal done. It whines just a little on decel in all 4 gears. More in the lower gears. It’s nkt terrible but it hums/ whines a little. It shifts nice and stays in all gears. Idle in neutral with the clutch out it makes a little rattle. Is that the front bearing making that? Should I worry about it ? What a pain in the butt to pull it all back out. Or am I worrying about this for nothing? This is the first 4 speed I’ve ever swapped, mich less driven. So I don’t know what’s normal and what’s not. 90 weight Castro gear lube about 1/2” below the fill hole. Lube was a little foamy so I dropped the level from the fill hole to 1/2” below it. Thanks all.

Re: A833 slight whine on decel [Re: da50r] #2462602
03/07/18 03:28 PM
03/07/18 03:28 PM
Joined: Aug 2003
Posts: 32,288
Bend,OR USA
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Cab_Burge Offline
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Posts: 32,288
Bend,OR USA
Does it whine when you let off at speed and put it in neutral with the clutch out? If so then it might be the rear output shaft bearing, if not it probably is in the rear end scope
If it didn't make any noise before installing THIS tranny then it has to be in the trans. shruggy
Please let us know what you find and do thumbs

Last edited by Cab_Burge; 03/07/18 03:29 PM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: A833 slight whine on decel [Re: da50r] #2462609
03/07/18 03:40 PM
03/07/18 03:40 PM
Joined: May 2005
Posts: 2,628
Middle TN
da50r Offline OP
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da50r  Offline OP
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Middle TN
It’s for sure not the rear end. You can hear a little whine and hum in the hump. It was a slant six auto before.

Re: A833 slight whine on decel [Re: da50r] #2462985
03/08/18 07:00 AM
03/08/18 07:00 AM
Joined: Dec 2009
Posts: 10,393
in a cattle trailer down by th...
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Guitar Jones Offline
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in a cattle trailer down by th...
I would fill it all the way up and not worry about it unless it starts getting worse. Neutral gear rattle is a normal noise in many manual transmissions. Some newer ones have a tension plate to lesson that but older transmissions do not. Gears can be noisy, especially old ones that the factory stamped out with an axe so a little gear whine is not concerning to me.

It's hard to say if anything is really wrong with your trans because we can't hear it so just keep an ear on it. If it starts getting worse than open it up. If it doesn't change drive on and be happy.


I never learned to count my blessings, I choose instead to live inside my disasters.

The Scamp is sold, now just two old trucks and one new one.
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NP435, D44, D60 and NP205 divorced transfer case. Magnum 5.2 MPI and NV4500 coming soon.
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Re: A833 slight whine on decel [Re: da50r] #2463023
03/08/18 11:57 AM
03/08/18 11:57 AM
Joined: Oct 2003
Posts: 3,760
South Park, Pa.
68LAR Offline
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68LAR  Offline
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Joined: Oct 2003
Posts: 3,760
South Park, Pa.
Originally Posted By da50r
Bought a used a833 that was very clean from a reputable parts seller in the industry. Popped the side cover and it looked nice and clean. I put new o rings, front bearing seal, and tailshaft seal. I got my trans seal done. It whines just a little on decel in all 4 gears. More in the lower gears. It’s nkt terrible but it hums/ whines a little. It shifts nice and stays in all gears. Idle in neutral with the clutch out it makes a little rattle. Is that the front bearing making that? Should I worry about it ? What a pain in the butt to pull it all back out. Or am I worrying about this for nothing? This is the first 4 speed I’ve ever swapped, mich less driven. So I don’t know what’s normal and what’s not. 90 weight Castro gear lube about 1/2” below the fill hole. Lube was a little foamy so I dropped the level from the fill hole to 1/2” below it. Thanks all.


Some gear noise is normal, although mostly with an 18 spline. I can't remember much noise with a 23 spline???? I don't think it's anything to worry about. If it is something going bad, it will probably get louder over time. Then you will have to pull the trans.


4 speed street legal. Best time 10.99 @ 124 mph on 93 octane pump gas @ 3926# total weight
Re: A833 slight whine on decel [Re: da50r] #2463139
03/08/18 03:55 PM
03/08/18 03:55 PM
Joined: Jan 2003
Posts: 42,460
Spokane Washington
ScottSmith_Harms Offline
Mr Wizzard
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Posts: 42,460
Spokane Washington
Is your bell housing aligned properly? If its out more than .005 max you can have pressure on your input shaft which can cause all sorts of issues. If your bell housing is not the original to the engine its on its almost certainly off some (or a lot!).

Re: A833 slight whine on decel [Re: da50r] #2463757
03/09/18 02:44 PM
03/09/18 02:44 PM
Joined: May 2005
Posts: 2,628
Middle TN
da50r Offline OP
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da50r  Offline OP
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Joined: May 2005
Posts: 2,628
Middle TN
I stuck a magnet and a dial indicator on the flywheel and checked the bell. It was pretty close to .006” or so to center. Did they machine the bells to the blocks at the factory? That’s what I’ve heard they did. I guess I got lucky with this bell and block combo. They aren’t a matching set.

Last edited by da50r; 03/09/18 04:57 PM.

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