1550 u-joints

[tornado112]

3rd gens use the 1550's. I would like to upgrade my shafts on my 94 auto (47RH) because its about time to replace the ujoints. Any way to make this happen with out cutting up the drive shafts. I was thinking I could change outt the yokes on the axles but what about the tranny side? Any suggestions thanks

 

[burnin oil]

Probably not that simple. Rear axle is a Dana in a 2nd gen and a AAM in a 3rd gen. Might get lucky though.

 

[GOT-Torque]

3rd gens don't use 1550's...

 

[burnin oil]

My 04.5 NV5600 4x4 truck did. Maybe because it was a long bed 2 piece driveshaft 3500 SRW???
If I were buying parts to up the Ujoint sizes I would jump up to a 1610 joint. They have a much higher torque rating. 1550s are factory joints but are actualy on the marginal side as far as torue application goes. Google "Spicer Life driveline components". That 4 page file has some outstanding info in it. Same with the driveline instalation manual. After reading those 2 you will be shocked at how much driveline angles effect Joint life. I actually wonder how they facory stuff holds together.

 

[zstroken]

My 04.5 NV5600 4x4 truck did. Maybe because it was a long bed 2 piece driveshaft 3500 SRW???

News to me also, I was thinking the 3rd gens are 1480 sized in the larger applications, and some were smaller.

 

[LReiff]

3rd gens don't use 1550's...

1550 only come on 4500 and 5500s. '06+ 2500 and 3500s seem to mostly have 1485/1480, before that (back to '03) it was a mix of 1415/1410 and 1485/1480. 1480 is plenty for any pickup application.

 

[smokingoat04]

My 04 HO nv5600 11.50 rear has 1480's, and my 03 SO 10.5aam rear has 1410 both QCSB.

 

[kleann]

My 99' dakota has 1550's and my 98.5' 2500 has 1410's, just doesn't make sense.