The A618, later renamed 47RE (electronically controlled governor pressure) is a heavier-duty version of A518 also known as the 46RE (which also has electronically controlled governor pressure, versus the earlier RH version, which was hydraulically controlled). It was used in trucks and vans starting in the mid-1990s. While currently used with some internal changes such as the move from aluminum to steel planetary carriers and an increase in the number of clutch plates when coupled to the 5.9 L Cummins Turbo-Diesel and the 8.0 L V-10 applications, it’s still a 727 with overdrive and stronger internal parts. It has an input torque rating of 450 lb⋅ft (610 N⋅m). The 48RE TorqueFlite Transmission is an electronically governed, ECU controlled, four-speed heavy-duty overdrive automatic transmission, that is stronger than its predecessor, the 47-series.
The base design from the original Torqueflite remains largely unchanged and the addition of a 2-speed output shaft (overdrive unit) that is bolted to the back of the 3-speed transmission has only two ratios: direct (1:1) and overdrive (.69:1). While lubrication to the overdrive unit was a challenge early on, this challenge was later overcome with factory improvements and/or aftermarket valve body kits. The overdrive planetary has six pinion gears (unlike the 5 pinion used with the A518 used with the Cummins turbodiesel) which is often used as an aftermarket replacement for the stock 4 pinion planetary used with the lighter duty transmissions.
Gear ratios:
| 1 | 2 | 3 | 4 | R |
|---|---|---|---|---|
| 2.45 | 1.45 | 1.00 | 0.69 | 2.21 |
Applications:
- Dodge Ram pickups 2500/3500 ISB Diesel and iron V-10 (DGP)
- Dodge Ram SRT-10 (DGP)f
- 1996-2002 (Also some early production 2003’s) Dodge Ram 2500/3500 Diesel/V10
- 1994-1995 Dodge Ram 2500/3500 Diesel/V10
- 2003-2004 Dodge Ram 2500/3500 ISB Diesel
- 2003-2004 Dodge Ram 2500/3500 HO ISB Diesel
- 2004-2007 Dodge Ram 2500/3500 600/610 Diesel
- 2004-2006 Dodge Ram SRT-10