banks twinram

i just wanted to id the transmission is it a 48re?

rip 112

10-4
2003 had the 47re and the 48re which was just coming into the picture, by 2004 the 48re was in all auto equipped Ram heavy dutys.

01Turbo

What are the differences between the two...just gearing or is the 48re any stronger than the 47re?

01Turbo

steelblitzkrieg

I know the 47 only had O/D lock-out while the 48 has T/H and O/D Lock-out.

Beyond that, not too sure myself.

rip 112

The 48re was indeed built to withstand the higher hp and tq numbers with slightly better gearing but for the most part they are based on the same concept.

j-fox

Same gearing in both.

banks twinram

is there any dimensional differences in the tranny case? more clutches?bigger bands? self adjusting bands?

banks twinram

what is T/H lockup?

cincydiesel

Planetary Gear is better in the 48re and the heat treatment on the input, output shafts are better.

banks twinram

does the bands still need to be adjusted in a 48re?

cincydiesel

Yeppers..

banks twinram

so does that mean the old school 727 non overdrive non lockup has basically the same internals as the 48re? interchangeable parts? i honestly dont see how these transmissions put diesel power to the ground at all. i know they do, but im not seeing it

steelblitzkrieg

T/H is Tow Haul: Increased pressures and (I believe) A change in shift points, not sure if the TC locks up earlier or not. I always leave mine in T/H, except for tunnels and sound walls where I select O/D lock-out.

banks twinram

tunnels (: i love it!

no_6_oh_no

In order No, Yes, No, No.

Your truck has only and OD lockout, 05 and newer have the TH feature, 06 and newer have TH plus OD off.

The 48RE has a slightly better input shaft, all steel planetaries, more clutches in the critical places, a better TC, and higher flow pump. Most of the hard parts will interchange with 727 and 46\47 units.