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50-0210 : GM NV4500 4wd to Jeep Dana 20 transfer case adapter kit. (#50-0210)

Retail Price: $625.35


Advance Adapter

The GM NV4500 adapter to the Jeep Dana 20 is 5.875" in length. And the overall length of this transmission and adapter is 18.250". Adapter material is 356 T6 heat treated aluminum alloy. The adapter has a provision for a transmission mount. The adapter kit includes an adapter housing, 6 spline spud shaft, special large hole bearing retainer, sealed bearing, snap ring, set collar, gasket, seal, nylon lock nut, and adapter instructions.

Transfer Case

Jeep Dana 18/20 transfer cases must have a 6 spline female drive gear. The transfer case bore size must be (4") large hole. The Dana 18 kit fits large hole transfer cases only. Transfer case shifter linkage will need to be modified in order to fit alongside the large 5 speed transmission case. Additional information can be obtained in our on-line catalog, Jeep & Scout Vehicle Section: Transfer Case Information, Jeeps 1974-79.

All transfer cases require the stock linkage to be modified for clearance on the NV4500 case.

Transmission

The adapter kit is designed for exclusive use with a GM NV4500 4WD transmission. Several adapter kits require you to shorten the existing transmission main shaft while it is still in the transmission case. This is common when a 4WD GM NV4500 is being used. Each instruction sheet gives the exact cut off location. Also refer to the pictures:

GM NV4500 31 SPL. SECTION UNDER SLEEVE-3 GM NV4500 CUT OFF LOCATION-2 GM Output Cut Dampener Removal


1) 1941-79 General Engine Conversion Info

4) Jeeps & Scout T/C Dana 18/20

1. NV4500 Specifications

NV4500 OUTPUT SHAFTS GM & DODGE

Output shaft

GM 32 TOOTH 4WD OUTPUT SHAFTOn all NV4500s that were equipped to a GM 4WD transfer case, you will find that the output shaft has 32 teeth. The adapter housing that is mounted to the back of the transmission case is 8-1/8" long. On the inside of this tailhousing, you’ll either find a vibration damper on the output shaft or a steel sleeve. Most of our transfer case adapters will require the damper or sleeve to be removed. We couple to the 31 tooth spline located under the damper or sleeve. In order to remove the vibration damper or sleeve, you must use a special socket. This socket will be required in order to remove the nut because this nut is put on with 275 ft./lbs. of torque. On transmissions with the damper, a gear puller will be required since the damper is a press fit to the output shaft. On all applications that require the removal of the damper or sleeve, we will provide a custom set collar that must be installed on the output shaft to retain the 5th gear into position. Dampener Removal Balancer removed

DETAILS ON CUTTING THE SHAFT

GM 35 TOOTH 2WD OUTPUT SHAFTAll GM NV4500s that were used in 2WD vehicles will be equipped with a 35 tooth output shaft. Located on the end of the shaft will be a large balancer type yoke. We do not make any transfer case adapters to couple to this output shaft.

DODGE 23 TOOTH 4WD OUTPUT SHAFT On all 1993-2000 NV4500s that were equipped with Dodge 4WD transfer cases, you will find that the output shaft has 23 teeth. The adapter housing that is mounted to the back of the transmission case is 6-1/4" long. On the inside of this tailhousing, you’ll find a locking nut that secures the 5th gear to the main shaft. This stock nut has undergone some design changes from the manufacturer because they have been known to loosen after time. Our adapters do not require the removal of this nut; however, you might want to make sure the nut is still properly secured. Most of our transfer case adapters do not require any modifications to the shaft or stock tailhousing.

DODGE 29 TOOTH 4WD OUTPUT SHAFT (for Heavy-Duty & 2001 Standard Duty transmissions)On all Cummins diesel Dodge Heavy-Duty 4WD NV4500s and 2001 & up Dodge Standard Duty 4WD NV4500s, you will find that the output shaft has 29 teeth. The adapter housing that is mounted to the back of the transmission case is 6-1/4" long. On the inside of this tailhousing, you’ll find a locking nut that secures the 5th gear to the main shaft. This stock nut has undergone some design changes by the manufacturer because they have been known to loosen after time. Our adapters do not require the removal of this nut; however, you might want to make sure the nut is still properly secured. If you have one of these transmissions and plan on changing the output shaft to one out of the other model NV4500s (i.e. a GM NV4500), you will also be required to change the 5th gear assembly since it will not fit on the new main shaft. A new nut to secure this 5th gear will also be required.

DODGE 30 TOOTH 2WD OUTPUT SHAFT On all NV4500s that were used in a Dodge 2WD vehicle, you will find that the output shaft has 30 teeth. The tailhousing that is mounted to the back of the transmission case is 13” long. This tailhousing uses a slip yoke assembly. The slip yoke can be purchased from your local dealer.

DODGE 31 TOOTH Heavy Duty 2WD OUTPUT SHAFT On all Cummins diesel Dodge 2WD NV4500s, you will find that the output shaft has 31 teeth. The tailhousing that is mounted to the back of the transmission case is 13" long. This tailhousing uses a slip yoke assembly. The slip yoke for this transmission is a 1410 series. We stock this yoke as PN716087, or it can be purchased from your local dealer.

Third - Forth synchro hub: 3-4 hub does NOT change from GM to Dodge. OEM, aftermarket or a mix of the two. Some slip on and some need to be hammered or pressed. Pressing can cause a little shaving on occasion.

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