4L80E info

[Z28SSMAN]

I found this on the net...






The 4L80 has more clearance than the 4L65 in transmission tunnel on my C2.

The longer rear mount location was no problem. The longer pan was only a minor problem that required making cutout in X-member to provide clearance to fit it. Will have to trim bellhousing mount point off on one side. Common problem with that on most cars from my research.









C2 = 63-67 vette

[Z28SSMAN]

Here are the official GM specifications for each transmission.

4660e/65e/70e stats from GM Powertrain

M30=4l60e 360 lb/ft max. torque rating 610 lb/ft max. gearbox torque rating
M32=4l65e 400 lb/ft max. torque rating 670 lb/ft max. gearbox torque rating
M70=4l70e 400 lb/ft max. torque rating 670 lb/ft max. gearbox torque rating


Hydra-Matic 4L60-E/4L65-E Transmission
(M30/M32/M33/M70/MD6/MK2)
Type: four speed rear-wheel-drive, electronically
controlled, automatic overdrive transmission
with torque converter clutch
2.8L - 5.7L (M30)
6.0L (M32/M70)
360 lb-ft (488 Nm) (M30)
400 lb-ft (542 Nm) (M32/M70)
610 lb-ft (827 Nm) (M30)
670 lb-ft (910 Nm) (M32/M70)
Gear ratios:
First: 3.06
Second: 1.63
Third: 1
Fourth: 0.7
Reverse: 2.29
1-2 6200 rpm
2-3 6100 rpm
3-4 n/a
Maximum shift speed (M32): 1-2 6400 rpm
2-3 6200 rpm
3-4 n/a
1-2 6400 rpm
2-3 6200 rpm
3-4 n/a
Maximum validated gross vehicle weight: up to 8600 lb (3900 kg) (application & axle
ratio dependent)
P, R, N, OD, D, 2, 1
P, R, N, OD, 3, 2, 1
Case material: die cast aluminum
Shift pattern: (2) two-way on/off solenoids
Shift quality: variable bleed solenoid
Torque converter clutch: pulse width modulated solenoid control
245, 258, 280, 300mm (M30) (diameter of
torque converter turbine)
300mm (M32)
Fluid type: DEXRON VI
wet: 74 kg (163.2 lb) (M30)
wet: 88.3 kg (194.6 lb) (M32/M70)
7.9L (8.4 qt) (245-mm converter)
10.8L (11.4 qt) (300-mm converter)
Pressure taps available: line pressure
Toledo, Ohio
Romulus, Mich.
Ramos Arizpe, Mexico
Chevrolet Colorado/GMC Canyon (M30)
Chevrolet TrailBlazer SS (M30/M70)
Chevrolet TrailBlazer/Buick Rainier (M30)
Chevrolet Silverado 1500-2500/GMC Sierra
1500-2500 (M30, M32, Hybrid (PHT)M33,
M70)
Chevrolet Tahoe/GMC Yukon (M30/M32)
Cadillac Escalade/Escalade EXT (M32)
Chevrolet Avalanche (M30)
Chevrolet Suburban (M30)
Chevrolet Express and GMC Savana (M30)
Chevrolet SSR (M32)
GMC Sierra Denali (M32)
GMC Yukon XL Denali (M30, M32)
HUMMER H2 (M32)
HUMMER H2 SUT (M32)
HUMMER H3 (M30)
Pontiac GTO (M32)
Envoy Denali (M30)
Saab 9--7(M30)

4l80e/4l85e trans stats also from GM powertrain

MN1=4l80e max torque rating 440lb/ft torque
MN8=4l85e max torque rating 460 lb/ft torque

2006 Hydra-Matic 4L80-E/4L85-E
Transmission (MT1/MN8)
Type: four speed rear-wheel-drive, electronically
controlled, automatic overdrive transmission
with torque converter clutch
4.3L - 8.1L gasoline
6.5L - 6.6L diesel
440 lb-ft (597 Nm) (MT1)
460 lb-ft (624 Nm) (MN8)
Maximum gearbox torque: 885 lb-ft (1200 Nm)
Gear ratios:
First: 2.48
Second: 1.48
Third: 1
Fourth: 0.75
Reverse: 2.07
1-2 5200 rpm
2-3 5200 rpm
3-4 5200 rpm
Maximum validated gross vehicle weight: up to 18,000 lb (8165 kg) (application & axle
ratio dependent)
7-position quadrant: P, R, N, OD, D, 2, 1
Case material: die cast aluminum
Shift pattern: (2) two-way on/off solenoids
Shift quality: force motor control
Torque converter clutch: pulse width modulated solenoid control
Converter size: 310mm (reference) (diameter of torque
converter turbine)
Fluid type: DEXRON VI
wet: 115 kg (254 lb) (MT1)
wet: 115.5 kg (255 lb) (MN8)
Fluid capacity (approximate): bottom pan removal: 4L - 6L (4.2 qt - 6.3 qt)
Pressure taps available: line pressure
Towing capacity: up to 22,000 lb (9979 kg) maximum gross
combined vehicle weight (application & axle
ratio dependent)
Assembly sites: Ypsilanti, Mich.
Chevrolet Avalanche (MN8)
Chevrolet Silverado and GMC Sierra
2500HD & 3500 series (MT1)
Chevrolet Suburban and GMC Yukon XL
(MT1/MN8)
Chevrolet Express and GMC Savana
(MT1/MN8)
Hummer H1 (MT1)
C 3500 HD (MT1)
W Series (MT1)

[Fast Eddy]

Thanks for posting that Z28ssman, still wondering how one of these works as a full manual trans?

[Z28SSMAN]

Here's a thread where people have had experience with them. It is a few years old but may still give some insight....

http://www.chevelles.com/forums/arch.../t-171423.html

[MarkisaTCScocksucker]

Thanks for posting that Z28ssman, still wondering how one of these works as a full manual trans?

Mark Eych on TCS has a programmer on his 4R70W, he says the company makes the same thing for a 4L80E. He had a lot of praise for it. I can't remember the name, but it was ~$500 I believe.