Advance Adapters AX15 - Manual (Page 6)

1996 & Up GM
1993 & Up DODGE
NV4500 Bellhousing
Bolt Pattern
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
P/N 26-0007R . * The top shifter’s will vary on these
transmission due to core supplies.
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 speedom-
eter 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. Identification of this
transmission can be obtained by using the identification charts in this manual.
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.
Dodge Standard Duty 4WD NV4500 (1993-1998)
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. 6