GM 4L80E/4L85E
 |
If you would like a
specific recommendation from a TCI® product specialist based on
your vehicle specs, click
here. |
|
Torque Converters
Triple
Tested Quality
TCI®
strives to produce the best torque converters in the industry. Part of
the process involves ensuring that each unit is built to spec.  Regardless
of what category or price level it may fall into, every TCI® torque
converter is Triple Tested during assembly.
Once all the prep work on
the component parts has been completed, the impeller is welded to the
front cover. Immediately following this process, a pair of dial
indicators are employed on a rotating table to verify that the impeller
body and pump drive hub remain true.
Each unit is then
pressurized and subjected to a leak test to confirm the integrity of all
the weld seams. Lastly, each unit is computer balanced to reduce
annoying and potentially damaging drivetrain vibrations that would occur
from an unbalanced torque converter. That's Triple Tested so you can be confident you're getting a
torque converter that's
ready to roll.
| Torque
Converter Application |
High Torque
Towing |
Saturday Night Special® |
StreetFighter®
10" |
Super StreetFighter™
10" |
| 1991-up 4L80E |
242910
 |
242900
|
242940
|
242941
|
These are lock-up converters.
Transmissions Triple
Tested Quality
 We also go the extra mile to ensure your
transmission is superior in both form and function. Beginning with a
careful inspection of the transmission case and components that will be
used, we replace stock parts with high performance bands and components
where applicable. We increase fluid flow, lubrication system and thrust
capacity. Problematic hard parts are replaced with stronger components,
many of which we fabricate ourselves at our in-house machining centers.
Valve bodies are completely remanufactured and 100% tested prior to
installation.
Finally, each and every TCI® StreetFighter® transmission must pass both a
static hydraulic pressure test during assembly and a final dyno test prior to
shipping. That's Triple Tested so you can be confident you're getting a transmission that's
ready to rock.
|
Fully remanufactured using 1993-2002
cores |
|
All bushings replaced with quality OEM
parts such as Federal-Mogul and Clevite |
|
All seal rings replaced with OEM rings
such as Sealed Power |
|
All gaskets and seals replaced with
OEM parts |
|
All control solenoids 100% checked and
flushed using bench top test unit |
|
All steels and clutches replaced with
new parts:
. Forward Clutches - Alto
. Intermediate Clutches
- Alto
. Direct Clutches - Alto
. Fourth Clutches - Alto
. Overrun Clutches - Alto |
|
Kevlar®-lined kickdown and
Low/Reverse bands |
|
New Overdrive roller clutch assembly
and new Low/Rev. roller clutch assembly |
|
Intermediate 34-element Intermediate
sprag doubles torque capacity over stock 16-element unit |
|
Higher mainline pressure from special
TCI® pressure regulator spring raises torque capacity |
|
Trans-Scat® kit installed for firmer
shifts |
|
Hydraulic apply circuits 100% tested
for integrity |
|
Every transmission dyno tested |
|
Available in the following
configurations:
. 1993 Late-1996 2-wheel drive
. 1997-up 2-wheel drive
. 1993 Late-1996 4-wheel drive |
|
Available options:
. 2.75 Low gear planetary
. Cast aluminum deep pan
. Alto Red Eagle® clutches and Kolene®
steels
. TCU
transmission controller for retrofits |
| Application |
Part
No. |
| 1993 ½-1996
4L80E StreetFighter® |
271000*
|
| 1997
& up
4L80E StreetFighter® |
271100*
|
* Requires TCI TCU system to
operate the transmission and torque converter functions if transmission is used
in a non-stock application.
Trans-Brake Valve Bodies
| Description |
Shift
Pattern |
Material |
Part
No. |
| GM 4L80E Trans-Brake Valve Body Kit, '91-'96 |
P-R-N-1-2-3-OD
(Full Manual) |
Aluminum |
274500
|
| GM 4L80E Trans-Brake Valve Body Kit, '97 & Up |
P-R-N-1-2-3-OD
(Full Manual) |
Aluminum |
274501
|
Service Kits
| Application |
Racing
Overhaul Kit |
Master
Racing Overhaul Kit |
Pro
Super Kit |
Trans-Scat
Valve Body Kit |
Racing
Filter and Pan Gasket |
| 1991-1996 4L80E |
278600
|
279000 1
|
278800
|
276000
|
278500
|
| 1997
& up 4L80E |
278605
|
279005
|
278805
|
276005
|
278505
|
1 Band not included.
High Performance Bands
| Application |
Part No. |
| 4L80E
reverse, Kevlar® |
225105
|
Additional service items can be
found here.
4L80E/4L85E Cast Aluminum Pan
The pan is an
extra-deep design, ribbed for added cooling capacity. The added material
thickness adds rigidity to the transmission case and a drain plug makes
fluid & filter changes much more pleasant. Kit comes with a pan
gasket, filters and stainless steel installation hardware.
| Application |
Part
No. |
| 4L80E/4L85E
Cast Aluminum Pan, All models |
278000
|
4L80E/4L85E Premium
Cast Aluminum Deep Pan
 TCI®'s newest line of high quality aluminum
deep pans turns the ordinary into the extraordinary. The larger fluid
supply and black powder-coated finish increase the heat dissipation,
therefore dropping internal transmission temperature 20 to 30 degrees
and increasing transmission life. Additionally, these "trick"
looking pans are built from aircraft-quality aluminum and feature added
cooling fins to further improve cooling.
Every TCI® premium transmission pan comes ready to install with
everything you need including new
stainless-steel installation hardware and Allen wrenches. The included
magnetic drain plug helps keep loose metal from being circulated through
the transmission and the unique o-ringed sealing surface ensures against leaks. For those looking to install a
temperature gauge, you'll appreciate the 1/8"-NPT port machined
directly into the pan.
| Application |
Part
No. |
| 4L80E/4L85E
Premium Cast Aluminum Pan, All models |
278010
|
4L80E/4L85E
Forged Steel
Clutch Hub
TCI®'s new Forged Steel Clutch Hub is CNC machined
from a 4140 steel forging. The all-new
construction is much stronger than the cast OE unit and will resist
fracturing, clutch tooth wear and
spline failures. Designed for 500 plus horsepower TH400/4L80E transmission
applications, the TCI®'s Forged Steel Clutch Hub is the perfect
remedy to avoid clutch hub
failure.
| Application |
Part
No. |
| TH400/4L80E/4L85E Steel Forward Clutch Hub |
228300
|
Internal
Wiring Harness
This replacement harness will
update a pre-1993 4L80E to the later style harness or work as a
replacement for a damaged original.
| Application |
Part
No. |
| GM 4L80E 1993L & later style |
276610
|
Miscellaneous Items
| Description |
Part
No. |
| 4L80E
Bushing Kit |
278685
|
| 4L80E
Sealing Ring Kit |
278680
|
Heavy-Duty
Flywheels and Flexplates - Click
here
Low Gear Planetary
| Description |
Part No.
|
| GM
4L80E 1991-1996 (2.75 1st, 1.57 2nd) |
277500
|
| GM
4L80E 1997 - later (2.75 1st, 1.57 2nd) |
277501
|
|
|
