A4LD, 4R44E, 4R55E and 5R55E
"The Little E4OD"
The new Baumann Electronic Controls Website is now open providing the latest technical and product information. You will also find information on our new Referral Incentive Program which pays you cash for referrals.
For the same information presented here on our new website go to http://www.becontrols.com/tech/ch7a4ldinfo.htm You will also find links to much more technical information.
These four and five-speed transmissions are used in four cylinder and V-6
applications (primarily the Ranger and Explorer) and have evolved as outlined
in the "Alphabet Soup" chapter. The A4LD was
derived from the C-3 three-speed automatic transmission by placing a two-speed
overdrive unit in front of the original three-speed workings. As the names
imply, the "E" transmissions are electronically controlled (similar to
the AOD-E/4R70W transmissions), while the 5R55E is a five speed version
currently used only with the SOHC 4.0L engine. The 4R44E is a light duty
version of the electronic unit, similar to the old non-4.0L A4LD transmission.
Baumann Engineering can recalibrate valve bodies for 2.3L, 2.8L, 2.9L,
3.0L and 4.0L applications on an exchange basis. This service will address
clutch and band durability issues, as well as shift quality and shift points.
For serious performance use, though, we recommend that you upgrade your
vehicle to the heavy-duty 4.0L Ranger/Explorer version of these transmissions
if it is not already equipped. Of course, the same transmission oil cooler
and torque converter strategy used with the E4OD transmission applies here
also. Baumann Engineering will produce a Baumannator
TCS version for these transmissions (useful for retrofit applications,
as well as a means of tuning OEM equipped vehicles).
V1.1 © Copyright 1994, 1995, 1998 by Karl
Baumann. All rights reserved.
Please see the Performance Guide Index (pguide.htm)
for complete copyright information.
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BAUMANN ENGINEERING & DESIGN
702 SOUTH MECHANIC ST
PENDLETON, SC 29670
Phone: (864) 335-9365
| FAX: (864) 335-9055
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