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NV4500 : NV4500 4WD 5 Speed Transmissions (#NV4500)

NV4500 : NV4500 4WD 5 Speed Transmissions

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NV4500 5 Speed Transmissions. Since the NV4500 is no longer in production, all transmissions sold by Advance Adapters are remanufactured. Our remanufactured transmissions carry a 1 year warranty from date of shipment and are offered in a few different configuration variants. Below you will find the build variants of our remanufactured NV4500 transmissions:

Option #

Make Configuration Fuel Type Input Spline Output Spline Part Number
  • Option 1
GM 4WD Gas 1-1/8” 10 Spline 32 Spline 26-0007R
  • Option 2
Dodge 4WD Gas 1-1/8” 10 Spline 23 Spline 26-0016R
  • Option 3
Hybrid 4WD Gas 1-1/8” 10 Spline 23 Spline 26-0016RGM
  • Option 4
Dodge 4WD Diesel 1-1/4” 10 Spline 29 Spline 26-0020R
  • Option 5
Dodge 4WD Gas 1-1/8” 10 Spline 29 Spline 26-0029R
  • Option 6
Hybrid 4WD Gas 1-1/8” 10 Spline 29 Spline

26-0029RGM

  • Option 7
Hybrid 4WD Gas 1-1/8” 10 DODGE 32 Spline

45-0104

  • Option 8
GM 4WD Gas (6.34:1) 1-1/8” 10 Spline 32 Spline

45-0105

Transmission shifter handles must be purchased separately as they are not included with the transmission listed above.

All of our transmissions are custom built with a GM top cover and shifter assembly. The transmissions will require a GM shift handle or our shifter handle PN716050C.

 New Venture 4500 (NV4500) Transmissions  

The New Venture Gear Corporation was developed when GM’s Muncie Transmission Division and Chrysler’s New Process Corporation joined forces to manufacture a full product line of manual transmissions. The NV4500 transmission was the highlight of this new venture. Featuring a granny low first gear coupled with a fifth gear overdrive, the stout NV4500 is truly the best of both worlds. 

First introduced in 1992, the NV4500 is a constant mesh helical geared, heavy duty 5 speed transmission. All forward gears are fully synchronized. The initial Dodge version offered a synchronized reverse. The transmission case is cast iron with an aluminum top cover. The case measures 12.375 inches and features dual PTO ports. The shifter handle typically allows for better accessibility over older granny 4 speeds as it is located further rearward at 9-1/2" from the face of the transmission.  

The 1992 & 1994 GM versions have a lower first gear of 6.34 and can be identified by a smaller front bolt pattern with a top to bottom measurement of 4.685". After 1995, the first gear and front bolt pattern reverted to the Dodge 5.61 first gear and the taller top to bottom 6.043" bolt hole configuration. The synchronized reverse was also added and the front bearing retainer was enlarged from 5.125" to 5.6" diameter. As a general rule, a GM NV4500 4WD transmission will always have a 32 spline rear output shaft with an 8-1/8" rear tailhousing. The input shaft is 6-5/8" 1-1/8" 10 spline with a .590" pilot tip. We have also seen a rare 1995 GM NV4500 which can be classified as a hybrid. The transmission has the lower 6.34 with the newer bolt pattern. 

Dodge 4wd NV4500 transmissions have always maintained the same gear ratios and bolt patterns throughout production; however, variations occur between diesel (and V10) versus gas models. Diesel NV4500 4WD transmissions always have a 29 spine rear output shaft with a 6-1/4"" rear tailhousing. The input shaft is 7-1/2" 1-1/4" 10 spline with a .75" pilot tip. The front bearing retainer index is 5.6" with a snout diameter of 1.75". 

Dodge Gas 4wd NV4500s initially were introduced with a 23 spline rear output shaft and a 6-1/4 tailhousing. The input shaft is 7-1/2", 1-1/8" 10 spline with a .75" pilot tip (we have seen very rare 1" 19 spline inputs in 1993 trucks). The front retainer is 5.6" with a 1.43" snout. In 2001, Dodge discontinued the 23 spline output shaft on the gas version NV4500, and all Dodge transmissions standardized to 29 spline.  

For most conversion applications, we like the Dodge gas version transmission with a GM input shaft. This allows the shortest transmission length for most applications. The GM input shaft from a 6.34:1 early transmission will not fit the Dodge transmissions. 

TRANSMISSION LUBRICATION: The NV4500 transmission uses approximately one gallon of synthetic oil. This oil is available at your local Dodge authorized dealer under Part No. 4874459 (quart), or your local GM authorized dealer under Part No. 12346190 (quart). Unlike regular petroleum oil that breaks down when it gets too hot, this synthetic oil is made up of different properties that do not break down. The transmissions are also equipped with synchronizer rings that are made of a fibrous material. The wrong fluid will cause the unit to develop “sticky” shifting. If the wrong fluid is used, more than likely you will have to have your transmission rebuilt.

 DO NOT SUBSTITUTE any other lubricant as internal damage will occur.  NOTE: Castrol Syntech is NOT the same as Castrol Syntorq. Castrol Oil Synthetic

 TORQUE SPECIFICATIONS: Top Shift Cover Bolt 200 Inch pounds. Adapter Housing 40 Foot pounds. Front Drive Gear Retainer 265 Inch pounds. Main Shaft Nut 4WD 275 Foot pounds.  P.T.O. Cover Bolts 30 Foot pounds.  Reverse Inhibitor Bracket 95 Inch pounds. Counter Shaft Brg. Ret. Plate 200 Inch pounds. Main Shaft Brg. Ret. Plate 200 Inch pounds.

 GASKETING SPECIFICATIONS: In order to install the new adapter housing, top cover, and bearing retainer, we recommend using Loctite 518 Gasket Eliminator. This sealant seems to work best. 

SPEEDOMETER: Most 4WD installations provide a speedometer drive gear on the back side of the transfer case. On 2WD transmission swaps, Dodge transmissions are the most desirable due to the mechanical speedometer drive. The later versions (1998 & newer transmissions) do not have any type of speedometer provisions. The GM 2WD NV4500 transmissions use an electronic speed sensor. These transmissions will not allow you to retain a cable speedometer drive.

BACKUP SWITCH:  All NV4500s are equipped with an electronic reverse backup switch. If your vehicle is equipped with some type of backup indicator light, it can be adapted very easily to the new NV4500 switch. The parts required to couple to this switch are PN300378 (1), PN300378 (2 req.), and PN300378-1 (2 req.). 

NV4500 rebuild kit:  If you find your own NV4500, but need to freshen it up with some new bearings seals and synchronizers, we offer PN715691. This kit supplies you with replacement parts for the normal wear items of the NV4500. 

Forward Speeds .... 5   

Dates Produced .... 1992 - 2005  

Manufacturer .... New Venture Gear  

Case Length .... 12.375  

Stock Adapter Length .... 6.25 Dodge & 8.125 GM 

Bellhousing Length ... 6.50 GM   

Over All Length .... Varies due to Adapters   

Case Material ... Cast Iron  

Input Shaft Spline .... 1-1/8 10 spline  & 1-1/4 10 spline Diesel 

Input Shaft Stickout Length .... 6.625 GM & 7.50 Dodge   

Pilot Diameter .... .590 GM or .750 Dodge   

Length .... 1.00    

Output Shaft Spline .... 4wd Model 23, 29 or 32     

1st Gear Ratio .... 5.61 or (6.34 GM 92-94) 

2nd Gear Ratio .... 3.04 or (3.44 GM 92-94)

3rd Gear Ratio .... 1.67 or ( 1.71 GM92-94) 

4th Gear Ratio .... 1.00  

5th Gear Ratio .... 0.73

Reverse Gear Ratio .... 5.04  or (6.24 GM 92-94)     

Transmission Weight .... 195Lbs 

Max Engine Torque .... 460    

Fluid Type .... Castrol Syntorq / Amsoil MTF   

Power Take Off Capable .... yes   

Gross Vehicle Weight Rated .... 15,000   

Input to Cluster Center Distance .... 4.291

INFORMATION ON TRANSMISSION IDENTIFICATION

TRANSMISSION I.D:

TRANSMISSION IDENTIFICATION

The NV4500 transmission identification tag is attached to the shifter top cover. The tag provides the transmission model number, build date, and part number. Be sure not to remove the I.D. tag during the conversion. The information on this tag is essential for ordering the correct replacement parts. Since we use various transmission configurations for the different types of transfer case & bellhousing adapters, be sure to examine the application for your particular conversion before finalizing the purchase of a NV4500. Dodge ID Tag GM ID TAG

3 trannies


GM 4WD NV4500 (1992-94)
During the first two years of the NV4500, 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.

Identification of this transmission can be obtained by using the identification charts in this manual. Due to the interchangeability of other NV4500 components, we also recommend that you verify the following information. Starting at the front, this GM transmission should have a input shaft pilot tip diameter of .590”. The spline of the input is 1-1/8” diameter 10 spline and protrudes approximately 6-5/8” from the face of the transmission. This input shaft cannot be interchanged with any other NV4500 input shafts other than transmissions with the same 1st gear ratio unless you change the counter drive gear also. The front bearing retainer index is 5.125”, with a snout diameter of 1.373”, and a front bolt pattern as shown. The shifter stud on the top cover is a male threaded connection. The rear of this transmission has an aluminum adapter housing which measures 8-1/8” long; and the output shaft is 32 spline. Most transfer case adapters for this transmission will require the replacement of the tailhousing and the shortening of the output shaft.

This transmission cannot be used with a Ford engine.
 

GM 4WD 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.

Identification of this transmission can be obtained by using the identification charts in this manual. Due to the interchangeability of other NV4500 components, we also recommend that you verify the following information: Starting at the front, this GM transmission should have a input shaft pilot tip diameter of .590”. The spline of the input is 1-1/8” diameter 10 spline and protrudes approximately 6-5/8” from the face of the transmission. This input shaft can be interchanged with other NV4500 input shafts with this 5.61 1st gear ratio. The front bearing retainer index is 5.125”, with a snout diameter of 1.373”, and a front bolt pattern as above. The shifter stud on the top cover is a male threaded connection. The rear of this transmission has an aluminum adapter housing which measures 8-1/8” long; and the output shaft is 32 spline. Most transfer case adapters for this transmission will require the replacement of the tailhousing and the shortening of the output shaft.


GM 4WD NV4500 (1996 & Newer)
This transmission has the same gear ratio as the 1995 version (1st 5.61:1; 2nd 3.04:1; 3rd 1.67:1; 4th 1:1 ratio, and a 27% overdrive). Chevy once again changed the bellhousing-to-transmission bolt pattern and went to a larger bellhousing index diameter. The new bolt pattern and index are the same as the Dodge Standard Duty NV4500. These transmissions use a GM internal release bearing.

Identification of this transmission can be obtained by using the identification charts in this manual. Due to the interchangeability of other NV4500 components, we also recommend that you verify the following information: Starting at the front, this GM transmission should have an input shaft pilot tip diameter of .590”. The spline of the input is 1-1/8” diameter 10 spline and protrudes approximately 6-5/8” from the face of the transmission. This input shaft can be interchanged with other NV4500 input shafts with this 5.61 1st gear ratio. The front bearing retainer index is 5.600”. This transmission uses an aluminum front retainer without a release bearing snout. The stock GM bellhousing used an internal release bearing that mounted to the front of this transmission. Most bellhousing adapters for this transmission will either require the replacement of the retainer or, on some applications, an adapter retainer bolted to the front of the stock GM aluminum retainer. The shifter stud on the top cover is a male threaded connection. The rear of this transmission has an aluminum adapter housing which measures 8-1/8” long; and the output shaft is 32 spline. Most transfer case adapters for this transmission will require the replacement of the tailhousing and the shortening of the output shaft. We carry this rebuilt transmission under PN26-0007R. * The top shifter’s will vary on these transmission due to core supplies. GM 1996 & UP Retainer


GM 2WD NV4500 (1993 & Newer)
These transmissions have the same front bolt pattern dimensions and gear ratios as the corresponding year 4WD NV4500 version.

These transmissions have a shorter tailhousing and a fixed output yoke. These tailhousings did not use a standard mechanical speedometer drive, but were equipped with an electronic speedometer setup. Connection to this speedometer must be considered.

We have found these transmissions to be best suited for full size Ford trucks that have the independent transfer case. The speedometer on this application will remain in the stock transfer case, and the short NV4500 tailhousing allows room for the short driveline between the transmission and the transfer case. To fit this transmission to a Ford bellhousing, a new Dodge input shaft is required. NOTE: The Dodge input shaft will not work in the GM NV4500s with the 6.34:1 1st gear ratio.  GM 2WD


GM NV4500 (Commercial Truck-Style)
Specialty aftermarket NV4500s manufactured for commercial truck applications (such as UPS trucks) may also be located in various salvage yards. The front portion of the transmission is comparable with all the various GM NV4500 transmissions; however, the tailhousing will need to be changed along with the transmission output shaft. These units can sometimes be purchased at a considerable savings, since the output yoke is not compatible for 4WD and conventional light-duty truck applications. GM Commercial


Dodge Standard Duty 4WD NV4500 (1992-1998)
These transmissions have the same front bolt pattern and bearing retainer index as the 1996 to current. Chevy NV4500 transmission. The gear ratios of all of the Dodge version NV4500s remained the same, which is a 1st gear of 5.61:1; 2nd 3.04:1; 3rd 1.67:1; 4th 1:1 ratio, and a 27% overdrive. These transmissions use a 7-1/2” long input shaft which allows the use of an adapter plate between a stock bellhousing and the NV4500 transmission.

Identification of this transmission can be obtained by using the identification charts in this manual. Due to the interchangeability of other NV4500 components, we recommend that you also verify the following information: Starting at the front, this Dodge transmission should have an input shaft pilot tip diameter of .750”. The spline of the input is 1-1/8” diameter 10 spline and protrudes approximately 7-1/2” from the face of the transmission (some early Dodge NV4500s had a 1”-19 spline input shaft). This input shaft can be interchanged with other NV4500 input shafts with this 5.61 1st gear ratio. The front bearing retainer index is 5.600”, with a snout diameter of 1.43” for the release bearing. Most bellhousing adapters for this transmission will either retain this stock retainer as it is or may require some machining on it. The shifter stud on the top cover is a male square connection. The rear of this transmission has an aluminum adapter housing which measures 6-1/4” long; and the output shaft is 23 spline. Our transfer case adapters for this transmission will sometimes replace this stock tailhousing or, as in many cases, this stock housing can be retained by using an adapter plate.


Dodge Standard Duty 4WD NV4500 (1999-2000)
These transmissions are identical to the 1993-1998 Dodge transmission with the exception of the transmission shift stud. Dodge changed the square style shift handle receiver to a metric 14mm threaded stud.

Dodge Standard Duty 4WD NV4500 (2001 & Newer)
These transmissions are identical to the 1999-2000 Dodge transmissions. Note: The output shaft on 2001 & newer models was changed to 29 splines. We carry this rebuilt transmission under P/N 26-0029R. * The top shifter’s will vary on these transmission due to core supplies.

Advance Adapters Custom Built (2001 & Newer)
These transmissions are built with a Dodge 29 spline output shaft and a GM input shaft. The transmission is also equiped with the GM front flat aluminum bearing retainer. We carry this rebuilt transmission under P/N 26-0029RGM. * The top shifter’s will vary on these transmission due to core supplies.

Dodge Standard Duty 2WD NV4500 (1992-1998)
These transmissions have the same front bolt pattern and bearing retainer index as the Dodge 4WD NV4500 transmission. The gear ratios of the Dodge 2WD version are the same as the Dodge 4WD version (1st gear 5.61:1; 2nd 3.04:1; 3rd 1.67:1; 4th 1:1 ratio, and a 27% overdrive). These transmissions use a 7-1/2” long input shaft which allows the use of an adapter plate between a stock bellhousing and the NV4500 transmission. Identification of this transmission can be obtained by using the identification charts in this manual. The tailhousing of this transmission is 13” long and uses a slip yoke with 30 splines. This transmission works great for most 2WD installations since it uses a mechanical speedometer drive. On 1998 Standard Duty 2WD transmissions, the speedometer pickup was moved from the tailhousing back to the rear axle. If you obtain one of these transmissions, you will be required to change the tailhousing and output shaft to components from an earlier Dodge 2WD if you wish to have a working speedometer.


Dodge Standard Duty 2WD NV4500 (1999 & Newer)
These transmissions are identical to the 1993-1998 2WD Dodge transmission with the exception of the transmission shift stud. Dodge changed the square style shift handle receiver to a metric 14mm threaded stud. On these Standard Duty 2WD transmissions, the speedometer pickup was moved from the tailhousing back to the rear axle. If you obtain one of these transmissions, you will be required to change the tailhousing and output shaft to components from an earlier Dodge 2WD if you wish to have a working speedometer.


Dodge 4WD Heavy-Duty NV4500 (1992-1998)
This transmission is normally used up to the Cummins Diesel. This transmission is best suited for Dodge 4WD Getrag 5 speed replacements and Toyota Land Cruisers retaining the stock six cylinder engine. We DO NOT advise using this transmission for other applications unless you are prepaired to change the Heavy-Duty front input and retainer.

Identification of this transmission can be obtained by using the identification charts in this manual. Due to the interchangeability of other NV4500 components, we recommend that you also verify the following information: Starting at the front, this Dodge transmission should have an input shaft pilot tip diameter of .750”. The spline of the input is 1-1/4” diameter 10 spline and protrudes approximately 7-1/2” from the face of the transmission. This input shaft can be interchanged with other NV4500 input shafts with this 5.61 1st gear ratio. The front bearing retainer index is 5.60”, and has a snout diameter of 1.75” for the release bearing. The shifter stud on the top cover is a male square connection. The rear of this transmission has an aluminum adapter housing which measures approximately 6-1/4” long; and the output shaft is 29 spline.


Dodge 4WD Heavy-Duty NV4500 (1999 & Newer)
These transmissions are identical to the 1993-1998 Dodge H.D. transmission, with the exception of the transmission shift stud. Dodge changed the square style shift handle receiver to a metric 14mm threaded stud. We carry this rebuilt transmission under PN26-0020R. * The top shifter’s will vary on these transmission due to core supplies.


Dodge 2WD Heavy-Duty NV4500 (1992-1998)
These transmissions have the same front bolt pattern and bearing retainer index as the as the Dodge 4WD Heavy-Duty NV4500 transmission. This transmission should only be used for the Cummins Diesel Getrag replacement. Identification of this transmission can be obtained by using the identification charts in this manual. The tailhousing of this transmission is 13” long and uses a slip yoke (P/N 716087) with 31 splines. If you obtain a 1998 Heavy-Duty transmission, you will be required to change the tailhousing and output shaft to components from an earlier Heavy-Duty Dodge 2WD if you wish to have a working speedometer.


Dodge 2WD Heavy Duty NV4500 (1999 & Newer)
These transmissions are identical to the 1993-1998 Dodge H.D. transmission with the exception of the transmission shift stud. Dodge changed the square style shift handle receiver to a metric 14mm threaded stud. On these Heavy-Duty 2WD transmissions, the speedometer pickup was moved from the tailhousing back to the rear axle. If you obtain one of these Heavy-Duty transmissions, you will be required to change the tailhousing and output shaft to components from an earlier Heavy-Duty Dodge 2WD if you wish to have a working speedometer.

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