We have listed below some of the more popular parts we keep stocked for the Getrag. Availability may change. Contact us for current  price and availability.

Input	Cluster Gear
M/Shaft 3RD	M/Shaft 5TH
C/Shaft 5TH	Cluster Shaft
Shift Screw	Rebuild Kit w/ Synchros

** Also see our NV5600 page**

In 1988, Dodge introduced the 5 speed Getrag trans. The powers that be determined at that time there would be no parts support for the Getrag whatsoever. As late as 1991, you still could not even buy a seal for the trans, but had to buy a “factory reman”, or a new unit. Around that time, probably due to customer pressure, parts started to hit the dealer shelves. Unfortunately, they were extremely expensive. A maindrive gear, for example, could run as much as $600.00, while a rebuild kit was about $800.00. Rebuilding a Getrag trans was a risky affair.

The box is physically smaller than one would expect, and problems like the weak 1-2 synchro assembly made for frustrating results. The aftermarket had not had time to manufacture parts for the Getrag, so the unit became somewhat of a liability. Our previous Dodge web page dealt with the problems encountered with these units, parts availability, & pricing at that time. The New Venture trans had come out in 1992, & Dodge replaced the Getrag with this trans in 1994. The folks at Getrag probably saw the writing on the wall, & prices for the parts & units really started soaring. We began selling the NV4500 conversions (SEE BELOW), with great success. About the only drawback with the NV4500 was that when hauling monster loads, the 5th gear had a tendency to press off the mainshaft.

Things change, and so has the market for the Getrag & NV4500 transmissions. The aftermarket has come up with many of the parts needed to rebuild the Getrag, and at reasonable prices. We currently stock all of the available parts.

The NV4500 has presented a new set of challenges. The 5th gear problem was due in large part to the half splines on the mainshaft under 5th instead of a full splined shaft.

We are now stocking the upgrade kit that has the full spline shaft & a new 5th gear.

They are available for the 2 or 4 wheel drive units.  On the downside, the production at New Venture apparently hasn’t been able to keep up with the demand, so there are quite a few parts that are getting hard to come by. We try to keep all of the parts needed to rebuild the Dodge NV4500, but it’s tough at times. The aftermarket boys are listening, though, and soon there will be enough parts to keep up.

We have listed below some of the more popular parts we keep stocked for the New Venture 4500.  Availability may change. Contact us for current price and availability.

NV4500
Input
Cluster, 94-96
Updated M/Shaft w/ 5th
5th Gear Nut
Rebuild Kit w/ Synchros
Pilot Bushing to Replace Bearing

Our Latest Upgrade is HERE!

The all-new cast iron extension housing for the NV4500 4×4 transmission. Replaces the weaker cast aluminum housing that tends to break.

This is a great upgrade that takes only a few hours to install.

Kit includes housing, new bolts, and seal!

The NV4500 transmission has a case length of just 12.37”, making it the perfect transmission conversion for short wheelbase vehicles such as Jeeps, Broncos, Land Cruisers and is also a great replacement manual transmission in older trucks with 4 speeds. The NV4500 is also a popular replacement for 5 speed transmissions used in newer trucks. With stronger gears, better case and improved bearings, you can also keep your stock clutch setup. (If you need a replacement clutch see our large clutch line).

 

Exploded View & Parts Indices

 

The NV4500 is a top loader style transmission. The lever located in the top shift cover operates the shift forks and rails directly. The shift forks and rails are located within the aluminum top cover which is bolted and dowel pinned to the top gear case. Tapered roller bearings support the input shaft, main shaft, and counter shaft in the gear case. Drive gear thrust reaction is controlled by a needle type thrust bearing which is located between the input shaft and main shaft. The main shaft gears are all supported on cage-type roller bearings.

** Also see our NV5600 page**

Gear Ratios:

Current production Dodge NV4500 and GM NV4500 share the same gear ratios. Early GM units (93-94) were built with a lower first gear ratio of 6.34 to 1.0. These low-geared GM boxes have since been discontinued and are generally much more difficult to obtain. We are able to provide new and remanufactured NV4500s with these early gear sets.

Beginning in 95’, all GM units were built with the same gear ratios as the Dodge unit.

Gear Ratios
Gear	GM 93-94	GM 95/up Dodge 93/up
1st	6.34	5.61
2nd	3.44	3.04
3rd	1.71	1.67
4th	1.00	1.00
5th	0.73	0.73
Rev	6.34	5.61

 

Dimensions
GM (6.34) GM (5.61)	Dodge Dodge HR
Main Case
12.375″	12.375″
4WD Adapter Housing
8.125	6.25
2WD Tailhousing
6″	13″
Yoke
Fixed	30spl Slip Yoke
Input Shaft Stickout
6.625	7.625
Input Shaft Spline
1.125″ 10spl	1.125″ 10spl
Pilot Dia.
.590″	.750″

 

Bearing Retainer Specification
Bell-housing Index Dia.	T/O Bearing Snout Dia.
GM NV4500 1993-95
5.125″	1.373″
GM NV4500 1996 and up
5.60″	none: Int Slave Cyl
Dodge NV4500 Standard Duty
5.60″	1.43″
Dodge NV4500 Heavy Duty
5.60″	1.75″

 

Bellhousing Bolt Pattern
GM 1993-1995	Across TOP 10.078″
	Across BOTTOM 10.394″
	VERTICALLY 4.685″
GM 1996 + up	Across TOP 10.078″
	Across BOTTOM 9.738″
	VERTICALLY 6.043″
Dodge (All)	Across TOP 10.078″
	Across BOTTOM 9.738″
	VERTICALLY 6.043″

 

Shifter Stub Specification
The NV4500 shifter will have a short stub sticking up from the top cover. There are 3 different methods by which a shifter extension handle attaches:
Dodge NV4500 1993-1999	A short, square stub sticks up
Dodge NV4500 1999-up	Threaded stub, 14mm x 1.5 pitch threads
GM NV4500 (All)	Threaded stub, 12mm x 2.0 pitch threads

 

Lubrication:

You MUST use the correct synthetic lubricant. We recommend Amsoil MTG. $15.00. AMSOIL MTG is the replacement fluid for GM part #12346190 and Chrysler part #4874459 (Chrysler specification #MS-9070). Use of ANY other oil in the NV4500 will lead to failure and voids any chance of a warranty claim.

 

New Venture 4500 Transmission Conversion Kits Historical View

The New Venture 4500 is a great choice to replace the 5 speed Getrag transmission introduced in 1988 and used in the 1988 – 1993 Dodge Truck w/ a Cummins diesel. Rebuilding a Getrag trans was a risky affair in dealing with the problems encountered with these units, parts availability, & pricing at that time. The New Venture trans had come out in 1992 and Dodge replaced the Getrag with this trans in 1994.

The Getrag is a smaller gearbox than the NV4500 and will always have the 1-2 synchronizer problems, among others. Although aftermarket parts are now available for the Getrag, the prices are still relatively high. About the only drawback with the NV4500 was that when hauling monster loads, the 5th gear had a tendency to press off the mainshaft. The 5th gear problem was due in large part to the half splines on the mainshaft under 5th instead of a full splined shaft.

While the NV4500 has had 5th gear problems in the past, we began selling the NV4500 conversions, with great success because we build all of our units using the upgraded fully splined 5th gear & mainshaft.

Here’s the REALLY EXCITING NEWS!
We now have new, lower pricing for our kits because of our volume buying power. When you figure this in as well as the mainshaft upgrade, you have a deal that can’t be beat on the planet! We’ll also be glad to give you any support needed to install our conversion kits.

The 4×4 is the easier of the two conversions, as all that’s required for the modification is that you cut a small piece of the floorboard back several inches. There’s no driveline work involved at all & the mounting is a breeze.  The price will keep you out of the poorhouse & you’ll have a unit you can really rely on.

The 2WD version is a little more complicated, but it’s still easy compared to most swaps. You’ll have to whittle a bit out of the crossmember with a torch, and the driveline has to be shortened some, but that’s about the only difference compared to the 4×4. A new rear yoke & a mount are included in the package. The price reflects the cost of the added slip yoke for the 2wd set.

Parts included for these kits are a rebuilt transmission with the fully splined mainshaft, a conversion bellhousing, pilot bushing, mount kit, and yoke (2wd models).

When you call us, don’t forget to ask about the great deals we have on the Amsoil oil & the clutch sets for your truck.

New Venture 4500 Transmission Conversion Kits Exploded Parts View

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