NV4500 leaks - Pirate4x4.Com : 4x4 and Off-Road Forum
Pirate4x4.Com : 4x4 and Off-Road Forum  

Go Back   Pirate4x4.Com : 4x4 and Off-Road Forum > Brand Specific Tech > Chevy

Share Thread Tools Display Modes
Old 04-16-2009, 08:45 PM   #1 (permalink)
Registered User
MuddinManny's Avatar
Join Date: Oct 2006
Member # 80610
Location: San Antonio, TX
Posts: 28
Send a message via AIM to MuddinManny Send a message via MSN to MuddinManny Send a message via Yahoo to MuddinManny
NV4500 leaks

Hey Y'all,

Here's my situation:

I have a brand new 92-94 early style GM NV4500 4x4 version transmission. It is bolted up to a hybrid fixed yoke NP208 and has a DIY4X clocking ring in-between.

Yesterday, I started my truck for the first time with the transmission installed. Immediately, Syntorq fluid began heavily dripping from where the clocking ring meets the t-case.

I don't understand why the NV4500 would leak, so I called my builder and he explained to me that the entire adapter fills up with Syntorq. I knew that the 5th gear overdrive which is contained inside the forward area of the housing gets oiled, but I didn't think that the output shaft area after the retainer was supposed to fill up. Here's a picture of the area which I am questioning:

When I pulled the BW1356 off my core, there was no Syntorq in there. What gives? I'm having a hard time accepting this as normal. I'm not aware of the NV4500 and t-cases sharing oil.

I have found that all models, Dodge and GM, except the 4x4 GM version have rear output seals. WTF?

Please help.


Keep all 4 wheels down...down and dirty in the MUD!
MuddinManny is offline   Reply With Quote Quick reply to this message
Old 04-17-2009, 10:50 AM   #2 (permalink)
Registered User
jeepinwilson's Avatar
Join Date: Aug 2004
Member # 34804
Location: Monroe, Wa.
Posts: 771
I ran into this with mine, different t-case but same senario and I have a seal on mine. Had to use black RTV on the clocking ring (both sides) and the studs. No leaking now.
1947 Willys
jeepinwilson is offline   Reply With Quote Quick reply to this message
Sponsored Links
Old 04-17-2009, 10:51 AM   #3 (permalink)
'Merica. Fuck Yeah!
86k30's Avatar
Join Date: Dec 2003
Member # 25703
Location: Muldrow, OK
Posts: 1,662
Fluid gets thrown up in that cavity but shouldn't stay there. Did you have the Tcase in when you started the truck? The countershaft rotates all the time (I think??)in the bottom of the case, even in neutral ,just off of the parasitic drag though. So it could throw fluid up there and leak if the tcase wasn't in yet.
The facelift:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
86k30 is offline   Reply With Quote Quick reply to this message
Old 04-17-2009, 02:05 PM   #4 (permalink)
Registered User
Join Date: Apr 2005
Member # 46216
Location: Sealy Texas
Posts: 588
Send a message via AIM to shortsub
ive got a nv4500 - 205 in my cummins .... silicone that sucker thats what i did.

mine doesnt leak , well it does but thats not the point here.

the silicone works
396 forged and rollerd' [U]small block[/U], propane, 60 /14 with chromos ,th400, ord doubler , HAD 1410s f/r , full hydro, lockd 42 sxs .... all wrapped up in a glittery package

07 d max LBZ with a fatgirl on the back
shortsub is offline   Reply With Quote Quick reply to this message

Quick Reply

Register Now

In order to be able to post messages on the Pirate4x4.Com : 4x4 and Off-Road Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.


Email Address:
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -7. The time now is 06:57 AM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 ©2011, Crawlability, Inc.
User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.