Engine/Transmission (1994 - 1998) NV4500 questions/problems

[telliott]

I know 5th gear loss is a common problem but what about 4th?



A friends 94 just lost 4th gear, still has 1-3 and 5 but sounds terrible in all gears. 4th is compleatly unusable. Anyone know what the issue is?



Also, will a NV4500 from a 2001 bolt up to a 94? I understand they are the same transmission, but what about the clutch/flywheel assembly?



He can get a NV4500 from a wrecked 2001, but wants to use the southbend out of his 94. will this work?

 

[GAmes]

The only posibility I can think of is the input shaft may be larger in the new one. The shift towers are also different so he will have to use the newer shift lever.

 

[Joseph Donnelly]

All Dodge diesel NV4500's had the same input, 1. 25” x 10 spline. The mainshaft and tail housing are different for 4x2 and 4x4. Check the lube level in the bad transmission. Sometimes the aluminum tail housing on a 4x4 cracks and the lube leaks out. Standard Transmission of Fort Worth TX (800-std-tran) offers a strong cast iron replacement tail housing.

 

[ata]

The output main shaft is broken under the forth gear synchornizer. Their is a snap ring grove there and it's a weak spot.