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2nd Gen Ram Tech1994-2001 Rams: This section is for TECHNICAL discussions only, that involve the 1994 through 2001 Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
I have a question I have a 2001 dodge Ram 1500 4wd with the 3.92 limited slip differential and I am replacing it with a 3.92 limited slip out of a 99 dodge Ram 1500. Ive already replaced backing plates and now my yoke that bolts to driveshaft is different. When my 01 flange type doesn't fit correctly what do I do? Replace the u joint and use my driveshaft or what. The 99 has the ujoint retainer plateswhile my 01 doesn't. The 99 The 2001
They both are 3.92 with limited slip. 4wd.
00 or 01 was the first year the half ton went to the flange plate. You could swap the input shafts, and replace the pinion seal, not a bad approach if its a used differential of unknown use, seal is bound to leak at some point, you could also change it at that time, just remove the flange plate from your u-joint and bolt the shaft into place using the caps and straps. If the caps are dry new u-joints should also be on the menu then. I would verify shaft length at the slip joint but I don't thing the change will effect much in length
I have a friend that's doing a similar rear axle swap, however, he's using a 3rd gen axle to gain 3.92 gearing, limited slip and disc brakes. To make the swap work, he will have to weld new spring perches onto his 3rd gen rear to fit the location of the 2nd gen rear springs. I advised him to obtain the drive shaft from the 3rd gen truck, as it would have the U-joint flange on it that bolts to the flat flange on the late model rear, unless he wanted to swap flanges between the 2nd gen rear and the 3rd gen rear.
I have a friend that's doing a similar rear axle swap, however, he's using a 3rd gen axle to gain 3.92 gearing, limited slip and disc brakes. To make the swap work, he will have to weld new spring perches onto his 3rd gen rear to fit the location of the 2nd gen rear springs. I advised him to obtain the drive shaft from the 3rd gen truck, as it would have the U-joint flange on it that bolts to the flat flange on the late model rear, unless he wanted to swap flanges between the 2nd gen rear and the 3rd gen rear.
Or I'd make a real effort to just buy the driveshaft side of the flange first before disturbing the pinion nut. Even if the cups are a different size crossover u-joints are almost surely available for any combo.
00 or 01 was the first year the half ton went to the flange plate. You could swap the input shafts, and replace the pinion seal, not a bad approach if its a used differential of unknown use, seal is bound to leak at some point, you could also change it at that time, just remove the flange plate from your u-joint and bolt the shaft into place using the caps and straps. If the caps are dry new u-joints should also be on the menu then. I would verify shaft length at the slip joint but I don't thing the change will effect much in length
Which seal do I use the one for the 99 or the one from the 2001? There made a little different but same size?
also so the 2 straps will hold on my current ujoint ? 99 in rear 2001 in front
Or I'd make a real effort to just buy the driveshaft side of the flange first before disturbing the pinion nut. Even if the cups are a different size crossover u-joints are almost surely available for any combo.
I have the flange type driveshaft but the flange yoke seams like it sticks out to far in differential.
Or I'd make a real effort to just buy the driveshaft side of the flange first before disturbing the pinion nut. Even if the cups are a different size crossover u-joints are almost surely available for any combo.
05-09-2023, 04:14 AM
Differential help
