i was wondering if i would need to swap shafts if i rebuild a 2 wheel drive 47re for my four wheel drive?

 

I think it's just the output thats different.

 

The back section is different.

 

Tail housing and output are different.

 

AS posted, the tail housing and the output shaft are different, everything else is the same. You will need a press and some special tools to get the overdrive unit apart to swap the output shaft.

 

The press tool is easy to make with a welder and some 3/8X1 flat stock.
I made one and used it in a trans shop for many years.

 

how do you make it,i work in a machinery building shop.

 

I left mine behind at the tranny shop so i cannot measure it.
Very easy to make.Two upright pcs connected to a cross piece in a "U" shape.
Very easy to figure the measurements once the OD shaft is out of the housing.

 

4" diameter, 3" ID at bottom, 5" tall.


Next, you will need an old intermediate shaft you can cut down to align the splines up when you put it back together. Without this you will never get the OD unit back on the transmission.