47RE and 48RE

[SWithrow]

Just found out from the dealer that my truck came stock with the 47RE, but I just ordered and installed a 48RE. My question is what is the physical difference between the two. The new trans works fine other than some small tweeks that need to be done.

 

[AllianceDiesel]

the 48 is just a heavier model of the 47

 

[p-Bar]

Valve body is beefier on the 48re other than that the same

 

[Cummins Thunder]

There are quite a few tweaks to the 48RE. Steel rear planet vs aluminum in the 47, six gear planets vs five in the 47, rear clutch plates have more splines, forward band strut is slightly thicker, forward band uses different apply lever, single sided clutch plates on OD direct, more clutch plates, heavier sun shell, stator shaft has graphite seal vs no seal on the 47.



Thats about all I can think of off hand. Also the main case is a little different(on the 2nd gen). The 2nd gen 47 uses a different neutral safety/reverse switch than the 3rd gen 48 and im not sure about the 3rd gen 47.



When I built the 48 for my 02 the only things I re used from the 47 was the main case, reverse/neutral safety switch, and the forward band apply lever (which if you were to use the 48 VB you could also use the 48 lever)



The main reason I did the swap was to get rid of the weak planets in the 47 (mainly that damn aluminum rear planet#@$%!)

 

[DonFitzwater]

If you search my posts you can look at my swap. There was a list of parts that I put into the 48re to easily fit in my 97 and also I used part of the 48re wiring harness in my install. I really liked that transmission even with the stock converter because I could pull the hell out of stuff and it never failed.