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NV4500 TECH II

Will get transmission input specs and show size as know its 1.250/10 I didn't just fall off the turnip truck have been working with this shit for the last 45 years.
 
And nope dont have the QT Bell just yet its not appropriate to buy the bell before I have the transmission to fit it, cant even find a 1995 NV4500 yet.
 
Ok. So we go through this every time because you always start new threads instead of carring on the same one.

You have a 96+ case.
Which pilot diam do you have?
 
New ideas and couldnt find the last thread.

Still need the transmission setup for BBC in the 86 chevy.

No end to this issue.




5.600 pilot diameter, up until a few months ago I didnt put 2 and 2 together and figure out that with the larger pilot I cant use the 9 oclock ball stud, in fact one cannot use any standard ball stud of the correct ratio of input center to ball stud / slave push rod.

I only bought this brand new 4500 because it was brand new didnt at the time care about the 1st gear ratio like most others that want the 4500.

So now this one is ( not for sale ) as I dont see a way to go forward and make this work with the 5.125 pilot.

Made it work with a used 1995 4500 case.
 
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Why not just run a hydraulic throw out bearing? Fuck the ball stud.
 
Have you called Advance yet?


They have a variety of parts to make them all work together.
 
Had a AA bellhousing and all of the BS that went along with it, AA parts are all ment to work together ( with their parts ) but dont work with outside parts in the case of the transmission I have.

Their bellhousing uses only the 1.125x10 input and their proprietary ball stud (full round) not the gm design, gm design wont work with their bellhousing.



Grendel said:
Have you called Advance yet?


They have a variety of parts to make them all work together.
Click to expand...
 
PAE said:
Had a AA bellhousing and all of the BS that went along with it, AA parts are all ment to work together ( with their parts ) but dont work with outside parts in the case of the transmission I have.

Their bellhousing uses only the 1.125x10 input and their proprietary ball stud (full round) not the gm design, gm design wont work with their bellhousing.
Click to expand...
Sorry, it was a thought. They've often helped me, with off the shelf parts knowledge, but I do a lot with them.
 
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It might have worked if I didnt have all of the parts associated with the 1.250x10 input shaft but too much parts to just swap out with AA compatible parts.

Input
Bearing retainer
Throwout bearing
Clutch fork 150.00 from dodge
Disc for 1.250x10 input mcleod 12 inch ceramic puck style.

Totals about 1K worth of parts associated with the 1.250x10 input shaft.

Will try to get pics today haven't been feeling well lately.
 
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So i did some poking around and found that 8.1l nv4500 uses a 1.25 input, they are a naked input like the 96+.


None of us have seen pae's actual trans yet. He says ut has a conventional retai er but i couldnt find a single gm 1.25 conventiona setup.
 
It's probably the dodge retainer than fits.

I don't get the ballstud problem. AFaIK, the dodges all use a ballstud and fork with the 5.6" retainer.

PAE are you going with hydraulic slave or linkage?
 
Hydraulic is what I have the parts for at the moment but external.

Not using a dodge bellhousing, the dodge bellhousing ball stud does not work the same as the gm, it uses as memory serves a fork that crosses the entire bellhousing from one side to the other and may use a different slave motion pull instead of push something like that.


20220122_104443.jpg


20220122_104703.jpg


20220122_105304.jpg


20220122_105232.jpg
 
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Depending on application some dodges usea setup like this.
4l_to_ax15_bellhousing_clutch_fork.jpg
 
PAE said:
Hydraulic is what I have the parts for at the moment but external.

Not using a dodge bellhousing, the dodge bellhousing ball stud does not work the same as the gm, it uses as memory serves a fork that crosses the entire bellhousing from one side to the other and may use a different slave motion pull instead of push something like that.
Click to expand...

That's right... I thought it crossed over the full length. It's still just a slave. Mount it the other way around to push forward. Does an aftermarket bell not have room for the different pivot stud location?
 
Havent found an aftermarket bell that wasnt $1-1.5k alot of coin to spend on a maybe this will work scenario.

Wont be able to talk to any transmission parts seller over the weekend but one good thing I think the case front hole where the bearing retainer mounts is the same size early or late.
 
Might not be an issue as the poster talks about using a 1.375 input which would use a different bearing retainer.

1.250 and 1.125 inputs might make use of the same retainer pilot dia.

Dude from pirate4x4 said:
I used the 1-3/8" cummins style input shaft, and the bearing retainer needed some massaging to work with the GM trans case. Two of the four trans to bell bolt holes need to be re-drilled, but all in all it was pretty doable. I realize that it would have probably made more sense to source a Dodge NV4500,
Click to expand...
 
PAE said:
1.250 and 1.125 inputs might make use of the same retainer pilot dia.
Click to expand...

Within 2ndgen Dodge (gas vs diesel), I tend to agree - the larger size that is. Nobody talks about boring their dodge NV4500 case for a 1-3/8" input upgrade - it's plug & play.
 
Now I'm wondering what the compatibility of the early to late 4th gear (Input shaft) is.

IE will my input shaft thats 1.250/10 currently in the 2001 GM NV 4500 work in the 95 NV 4500.

I know the ratio is different between the two generally but this is the 1-1 4th gear so....

Ive heard that the 95 4500 uses the early bellhousing bolt pattern but uses the late gear ratio so Im assuming the 1.250/10 input will work and mesh with the cluster gear of the 1 to 1 4th gear.
 
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This looks like it might work.

The premise is I find a 95 nv4500 and use the input I have in it.

The idea is if the tooth count are the same from the input on the early nv4500 (call it a 95) to the input on the 96+ nv4500 I have thats the 1.250/10.

At this point its all experimental, the aim is to salvage the 1.250/10 input for use in the 95 nv4500 that will have the correct bearing retainer to hook up with both the mcleod disc I already have and be able to make use of a 5.125 bearing retainer.

forum.ih8mud.com

Early GM NV4500 input shaft swap q's

EDIT: SOLVED. See edit at the below. I have researched this thoroughly and found conflicting info. Not that I have a strong desire to do it but I'd like to know if it is an option. I will be building my FJ40 soon and running an LM7, NV4500, to the FJ40 T-case. Have a 93 GM NV4500 4wd with...
forum.ih8mud.com forum.ih8mud.com
 
PAE said:
This looks like it might work.

The premise is I find a 95 nv4500 and use the input I have in it.

The idea is if the tooth count are the same from the input on the early nv4500 (call it a 95) to the input on the 96+ nv4500 I have thats the 1.250/10.

forum.ih8mud.com

Early GM NV4500 input shaft swap q's

EDIT: SOLVED. See edit at the below. I have researched this thoroughly and found conflicting info. Not that I have a strong desire to do it but I'd like to know if it is an option. I will be building my FJ40 soon and running an LM7, NV4500, to the FJ40 T-case. Have a 93 GM NV4500 4wd with...
forum.ih8mud.com forum.ih8mud.com
Click to expand...

The early NV4500 for GM was 92-94.5. I have a late 94 and it is the old style bellhousing but the 5.61:1 first gear. 95+ was the new style bigger bearing retainer size. All of the dodge 1 3/8 shafts come with a new retainer to match. So id assume a GM 1.25" would use the same retainer as the dodge 1.25".
 
Early Bellhousing to fit the 92-95 with the 5.125" bearing retainer.

Quick Time RM-8024 QuickTime Bellhousing - Chevrolet Small & Big Block

The Quick Time RM-8024 bellhousing connects small block and big block Chevy engines to GM NV-4500 transmission. This bellhousing is S.F.I. 6.1 certified which is required by many sanctioning bodies for cars running 11.49 or faster in the quarter mile. This bellhousing is a universal fit...
www.holley.com www.holley.com



No on the bearing retainer as the hole in the throw out bearing is larger from the 1.125 to 1.250 to 1.375.


The bearing retainer in 95 GM 4500 was 5.125 OD from my info.


earlyNV4500.jpeg


20220120_201429.jpg


Winchested said:
The early NV4500 for GM was 92-94.5. I have a late 94 and it is the old style bellhousing but the 5.61:1 first gear. 95+ was the new style bigger bearing retainer size. All of the dodge 1 3/8 shafts come with a new retainer to match. So id assume a GM 1.25" would use the same retainer as the dodge 1.25".
Click to expand...
 
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Winchested said:
The early NV4500 for GM was 92-94.5. I have a late 94 and it is the old style bellhousing but the 5.61:1 first gear. 95+ was the new style bigger bearing retainer size. All of the dodge 1 3/8 shafts come with a new retainer to match. So id assume a GM 1.25" would use the same retainer as the dodge 1.25".
Click to expand...
96+ chev should be a hydraulic TO bearing and large retainer pilot.

95 chev should be a fork setup on the small retainer pilot just like 91-94 (6.34 ratio units)... the main change is the updated 5.61 ratio.
Your "late 94" is what is normally called a 95. (I have owned this version.)

Dodge V8 and diesel (94+) have the large retainer pilot regardless of the actual input shaft diameter. (I have both 95ish trans for reference - just not torn down.)
 
This input shaft a 1.250/10 is currently in the 96+ nv4500 transmission identified by the paper tag in the pic below from memory it stated 2001 when I last looked it up.

And since the 95 is also a late ratio nv4500 thats the basis of why I think it should fit.

Then all I need to worry about is a titanium bearing retainer.

Kidding.....

total newb knows I am biased toward the eccentric.


20220122_104703.jpg


20220122_104450.jpg
 
5.600 on the one thats on my 4500 but would look for a 5.125 or have one made.
 
Will have to measure it.

Most likely the same as the dodge as it uses a dodge TO bearing.
 
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