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I am interested in replacing my 92 YJ AX15 with an NV4500, but am uncertain which years and models of the GMC and Dodge vehicles came with them. Also, if anyone has any advice on this swap out, that would be greatly appreciated. So far, simply have the SYE and D44 in the rear with a slightly modified (Clifford Cam, Header, Loads of head work, blah blah) mill pushing things. Advice on things like clutch, bellhousing and linkage would be great. Thanks!
 

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Welcome Local Newbie.

You can find this in Chevy/GMC trucks 93+. Usually you find them in 3/4 or 1 tons but they were available in 1/2 tons if it was ordered with the "MT8" option. I believe the diesel and big block ones are different (output spline difference?) so a small block gas engine donor would be preferred. The Dodge ones were similar except I don't think they came in the 1/2 ton at all. I believe the same deal applies with small block gas motor trannies being preferred over diesel or V10 trannies.

The recommendation above about the swap manual is a good one.



Pulled from AA:

NV4500 (1993-94): During the first two years of the New Venture 4500, Chevy offered this 5 speed with a 6.34:1 1st gear;
2nd 3.44:1; 3rd 1.71:1; 4th 1:1 ratio, and a 27% overdrive. It was also the first year that Chevy changed the bellhousing-to-transmission
bolt pattern. This transmission is ideal when converting your vehicle, providing an ultra-low 1st gear. GM, however, only produced
this particular ratio during these years. The major complaint of this 5 speed was stiff shifting and noise in 3rd gear.

NV4500 (1995): This transmission is identical to the 1993-94 transmission, except the 1st gear ratio had been changed
to 5.61:1; 2nd 3.04:1; 3rd 1.67:1; 4th 1:1 ratio, and a 27% overdrive. The noise and shifting problems had been corrected.

NV4500 (1996-2003): This transmission has the same gear ratio as the 1995 version. Chevy once again changed the
bellhousing-to-transmission bolt pattern and went to a larger bellhousing index diameter. This Chevy NV4500 has the same
bellhousing-to-transmission bolt pattern as the Dodge NV4500. These transmissions use a GM internal release bearing.

Dodge NV4500 (1993-2003): This transmission is the same as the 1996-99 Chevy version; however, the
only difference is the transmission input shaft, output shaft, and the tailhousing. The 2001 & up Dodge
transmission was changed to a 29 spline output shaft.
All NV4500 transmissions have a 12.375” case length.
(For more information on New Venture transmissions, order instruction manual NV001)


Good luck.
 

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Neo said:
I am interested in replacing my 92 YJ AX15 with an NV4500, but am uncertain which years and models of the GMC and Dodge vehicles came with them. Also, if anyone has any advice on this swap out, that would be greatly appreciated. So far, simply have the SYE and D44 in the rear with a slightly modified (Clifford Cam, Header, Loads of head work, blah blah) mill pushing things. Advice on things like clutch, bellhousing and linkage would be great. Thanks!
Do as much research as you can before you start the swap. Check out AA and Novak for adapters. AA has install instructions with diagrams that should help with the swap. I used a stock TJ clutch on mine. You'll probably need a CJ 4cyl slave from 4wheelparts or someone else, plus the stainless line and fittings to attach it to the master. I replaced the slave pushrod with some allthread and a couple of jam nuts. You'll need to get at least 1" of travel from the slave to full dissengage the clutch. Not sure what you'll have to do about the YJ tcase shifter. You'll probably have to modify your skid also. I used the bellhousing and tcase adapter housing from AA.
 

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About the 4500 swap

I am not really a Jeep guy but I do own a 92 XJ and I do work on them Nearly everyday. I just completed a swap on a 95 yj that had the 2.5. We swapped that out for a 92 4.0HO. He had the 4500 behind the 2.5 and I had to remove the existing bellhousing kit and he had purchased the AA kit (complete w/ slave, clutch lines, clutch fork, it was very thorough and user friendly) I was very impressed with the completeness of the instructions and detail. You do have to have some mechanical background to make it go a little smoother, but its not unbearable.
I have also peiced together a novak system that was similar but no comparison!!! I would definitely go with the AA and all they recommend!! Any questions I can help with just PM me or email me!

Kruzrtek
 

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Re: About the 4500 swap

kruzrtek said:

I have also peiced together a novak system that was similar but no comparison!!!
Kruzrtek
That's interesting, since Novak does not have a kit.
 
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