1354 planetary into 1350 case?

[metalmacguyver]

i know the 1354 cases have 6 planet gears and the 1350 cases have 4 gears. if i were to take a planetary set out of an electric 1354, could i drop it right into a manual 1350?

i know that the 1354 is stronger than the 1350, but exactly how much stronger is it? huge difference? or only a small one?

 

[4x4junkie]

It's a small strength difference (and it's not so much because of the planetary gears, it's because the 1354 does not have an internal u-joint on the front output).

The 6-planet gearset I would imagine would fit in a 1350 though. The 1st couple years of 1354s also used the 1350 4-planet gearset. It's possible you might also need to swap the ring gears in the case, but not sure.

 

[AllanD]

No, the ring gear is exactly the same,
but to swap in the 6-pinion planetary you also need to swap over the
sun gear/input, the "dog" that engages the planetary and the shift fork
as they are different as a set.

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[metalmacguyver]

ok but just to clarify, the shift fork and dog are common to both the electric and manual cases but are unique to the 6 pinion planetary set and the 4 pinion planetary set.

so an electric 1354 would have all the parts needed to swap the 6 pinion planetary into the 1350 case. correct?

so its the internal u joint that is the weak link. didnt know that.

so do we know or have a guide to what years of trucks had which transfer cases?

 

[Todd]

Swapping the planetaries wont give you much strenght gain. The main strenght gain of a 1354 over the 1350 is that the 1354 does not have an internal u joint and a fixed front out put rather then a slip yoke.

 

[AllanD]

Yes, the electric 13-54 from an explorer will have all that's needed to "upgrade"
a 4-pinion planetary to a 6-pinion.


But I've never seen either planetary "Broken"

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[metalmacguyver]

ok that is what i needed to know. thanks for the help!