NV4500L 1997-2007 NV4500 High Ratio Transmission Case

NV4500L 1997-2007 NV4500 High Ratio Transmission Case is a new takeout Transmission Case for 5.04:1 Reverse Gear Ratio. Replaces damaged stock cases from 1997 and newer Dodge and GM New Venture NV4500 transmissions manual transmissions. May have some external rust from long storage. Includes factory installed Countershaft Front Bearing Cup, PTO covers, and Fill Plug. USA Made. Note: These cases are from brand new NV4500 transmissions we disassembled for parts. The cases are rusted from long storage in an unheated warehouse! Sold individually! Very Limited Supply! When gone-they're gone!

Note: Since these are cases from brand new transmissions we parted out, you get the attached small parts listed above, however you also get some RTV sealant you will need to clean off the mating surfaces.

Also See: NV4500LU Used 1997-2007 NV4500 High Ratio Transmission Case available while supplies last.

Need More Info? Use the handy Links below to access over 40 years of Dan's product and vehicle specific Tech Notes to easily get the information you need for your vehicle's repair, maintenance, or upgrade project!

Dan the Gear Man® Tech Notes:
Case Specs
Early vs. Late Cases
Sealants
Common Causes of Cracked Cases
NV4500 Tools
Rear Output Applications
Matching Parts
Applications

Tech Note 1: Case Specs
New Venture made a number of different 4500 main cases for General Motors and Chrysler. All are made of cast iron and have both left and right PTO covers. The three primary variations found in Dodge and GM applications all have identical top cover and rear housing bolt patterns. The differences are the front case face and reverse idler mounting. Listed below are the approximate Center to Center Bolt Pattern Dimensions and Input Retainer dimensions:

Tech Note 2: Early vs. Late Cases
Early and Late NV4500 Transmission cases are not interchangeable. When first introduced, the NV4500 Transmission had a dual-plane reverse where the power transfer path from the counter shaft to the mainshaft reverse gear is offset. The front half of the 2-3/4" long reverse idler gear engages the countershaft, while the rear half drives the mainshaft reverse gear. Since there are no teeth on the counter shaft below the mainshaft reverse gear, that gear can be larger diameter and have more teeth (39). The 1992-1996 transmissions have a 6.34:1 reverse for 1992-1994 GM and 5.61:1 reverse for all Dodge and 1996 GM.

Tech Note 3: Sealants
Early production NV4500 Transmissions used an anaerobic sealant (QU90003) to seal between the main case and input bearing retainer, top cover, and rear housing. Mid-production units used anaerobic sealant just on the input retainer and RTV for everything else. Later production transmissions used black RTV Sealant (QU90006 or QU90005) for everything. Either type of sealant works fine (except the PTO covers ALWAYS should be sealed with RTV), but I prefer RTV for all components. Regardless of which sealant you use, make sure excess sealant does not block the lube access hole at the top of input retainer pilot that fits into the transmission case! Also, the threaded holes in the main case for the four retainer bolts and 12 PTO bolts are open ended, so you must use new bolts with factory applied threadlocker or apply Threadlocker (S24200) to your existing bolts to prevent oil seepage past the bolt threads. See my TM1003 NV4500 Shop Manual or VSG1003DVD NV4500 Overhaul Video for more information.

Tech Note 4: Common Causes of Cracked Cases
If your original transmission main case cracked, check for broken motor mounts. A broken motor mount can cause the engine to twist beyond what the transmission case can handle. Loose Transmission mounting bolts can also cause a case to crack. A transmission that is run out of oil will frequently have a cracked case, but it may be difficult to determine if the case cracked before or after the lube oil was lost.

Tech Note 5: NV4500 Tools
Need Torque Specs or Rebuild procedures? Order my 116 page, full color illustrated TM1003 NV4500 Rebuild Manual. You will need some special tools to correctly service your NV4500 Transmission. The chart below lists our current NV4500 Special Tools for popular models.

Tech Note 6: Rear Output Applications
NV4500 Transmissions are frequently used for conversion applications. The Table below lists the most popular rear output applications and their associated parts.

  *Electronic, Screw-In Speedometer Sensor
**22 Tooth Mainshaft 5th Gears listed for 1992-2005 Dodge and 1995-2007 GM with 5.61:1 1st gear ratio. 1992-1994 GM with 6.34:1 first gear ratio use 19 Tooth QU10728 Gear. QU10728 is NOT compatible with Dodge 29 and 31 Spline Output Shafts.

Tech Note 7: Matching Parts
Matching Parts for 1997-2007 NV4500L Transmission Case:
QU10704 Input Bearing Retainer for 1996-2007 GM
QU11238 Input Bearing Retainer for Dodge NV4500HD
QU50830 Input Bearing Retainer for Dodge NV4500LD
QU10100 Bearing Retainer Bolt with factory applied RTV sealant for Dodge
QU10079 Reverse Idler Gear
QU10041 Reverse Idler Shaft
QU10106 12 Point Metric Tailshaft Housing Bolt with factory applied Threadlocker
QU10146 Tailshaft Housing Alignment Dowel
QU10716 GM 4x4 Rear Housing
QU10726 GM C-Truck 4x2 Rear Housing for Push-In Speedometer Pickup
QU10233 GM C-Truck 4x2 Rear Housing for Screw-In Speedometer Pickup
QU10217 GM Cast Iron Long 4x2 Housing with Park Brake Mounting Pad
QU10057U Used 1994-2005 Dodge 4x4 Rear Housing
QU10024 1994-1997 Dodge NV4500HD 4x2 rear Housing
QU10083 1998-2004 Dodge NV4500HD 4x2 Rear Housing
QU10198 Integral Tower Shift Cover Assembly for 1992-1997 Dodge, 1992-1994 GM
QU10706 1998-2005 Dodge, 1996-2002 GM Top Shift Cover
QU9999 2002-2007 Shift Cover with Shift Tower for GM with 2" Body Lift
QU90003 Anaerobic Sealant
QU90006 3.35 oz Ultra Black RTV Sealant
QU90005 0.5 oz Ultra Black RTV Sealant
S24200 6ml Threadlocker
S9978 1 gram Threadlocker
QU90020 NV4500 Manual Transmission Oil
TM1003 NV4500 Shop Manual
VSG1003DVD NV4500 Overhaul Video

Applications

Chevy and GMC:
GM C1500, C1500, C2500, K2500, C3500, K3500 trucks, and P-series vans with Diesel or gas engines: 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007

Dodge, Plymouth, and Ram:
Ram 2500, Ram 3500: 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005

Other Popular Applications:
Dodge 250, 350 Series with Cummins Diesel and NV4500 Transmission Retrofit Kit: 1989, 1990, 1991, 1992, 1993
Jeeps and Rock Crawlers with 5.04: Reverse Ratio NV4500 Conversions