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Old Yesterday, 08:27 AM   #1
SHX669
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Overfill NV 3550 - on purpose ?

I don't remember where but I read some people overfill their NV 3550s to quiet them down a bit as they are a little noisy. Anyone have experience with this or heard of anyone doing it ?
My version of the NV takes 2.4 qts. and that fills it to the bottom of the fill plug . I'm going to have the tranny shift tower off and thought that would be the perfect time to add a pint or 1/2 pint if it wouldn't hurt anything.
I'm using Mopars suggested NV3550 fluid and have about a quart and half sitting in the shelf.
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Old Today, 02:04 AM   #2
DirtDonk
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It is, or at least was a common practice. Don't hear it much lately probably because we haven't talked about very many 3550 installs lately either.
But if I remember, all reports said it worked.

It should not be a bad thing either, like over-filling an engine would be. I don't see any harm, but I'm not sure I'd add the entire quart and a half that you have. I would probably just use an extra half-quart to bring it up to 3 instead. For starters at least.

Good luck. And let us know how it works.
By the way, have you already run yours and found it noisy? Or is this the initial install and fill?

Paul

'71 Wagon, 3.5" WH, F150 disc brakes and steering, 4.11 33x11.50 Thornbirds, Kayline soft top, Hanson bumpers. "Built, not bought"

'68 LUBR, 2.5 + 1 WH, 31x10.50, 4.56, Explorer and 4R70w by EFI Guy, WH disc brakes, Hanson front bumper, Warn winch. "Bought, not built"

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Old Today, 09:36 AM   #3
SHX669
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Thanx for the reply Paul .
Yes I've been running the 3550 for 6-10 years . It's not horrible but noisy in neutral and at low speeds /low gears. It probably makes noise other times but certainly can't hear it with the road noise .
I added 8 oz of fluid so guess i'll see if that changes anything. I thought about adding the entire 1/2 pt just to get the bottle off the shelf - LOL - If I change my mind it'll just give me another easy rainy day Bronco project --
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Old Today, 11:14 AM   #4
blubuckaroo
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I added a bit more to mine over the fill plug, but I think the main problem is that Advance Adapters sends out the kits with only two quarts of the oil. It takes more than that to get to the proper level.
I put in 2.5 quarts and kept the other half for the next oil change.
The stuff is pretty expensive. Cost me $30 for the extra quart at the Chrysler dealer.

'77 Ranger/cut F&R/PS/PB/Vintage Air/2" suspension lift/1" body lift/T tie rod conversion/33-1050-15 BFG K02 tires/ 302/ Edelbrock 500 CFM 4 bbl/Aero Tanks/ Hooker Headers/ dual ex/ NV3550/ B&M shifter/ JB FabTwin Sticks/ 4.11s/rear posi.
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Old Today, 11:47 AM   #5
73azbronco
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vvvvvvvvvvvvvvvvvvvv

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Old Today, 11:50 AM   #6
DirtDonk
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Quote:
Originally Posted by SHX669 View Post
It's not horrible but noisy in neutral and at low speeds /low gears. It probably makes noise other times but certainly can't hear it with the road noise.
They are noisier by nature than the standard Bronco transmissions, so if your floor is bare, or you have minimum insulation (like bed liner, or just floor mats for example) then you're going to hear it more.
If you have any open holes still, or worse yet the shifter boot is not sealed or insulated well, you'll hear a LOT of those strange rattly noises.
Love to get rid of those, but for mine it's always about insulating the floor and firewall.

When I stuffed some of that blue Ensolite camping foam under my shift boots, leaving just enough room for the shift levers to slide through, even with the stock transmission it quieted road noise down a lot!

Since you've driven yours so long now, I'm very interested to hear if you feel the extra lube did anything to quiet it down.

Paul

'71 Wagon, 3.5" WH, F150 disc brakes and steering, 4.11 33x11.50 Thornbirds, Kayline soft top, Hanson bumpers. "Built, not bought"

'68 LUBR, 2.5 + 1 WH, 31x10.50, 4.56, Explorer and 4R70w by EFI Guy, WH disc brakes, Hanson front bumper, Warn winch. "Bought, not built"

www.wildhorses4x4.com
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