Flyer

iTrader: (1)

Not that I know of. To my understanding, the 85e is a performance thing for the aftermarket. A lot of the hot rod builders are using that as the tranny of choice now for street machines, I guess because of the lockup converter. I think this is why GM decided to build an 85e.

one03sierra

iTrader: (1)

this isnt true. the vho and ss have 6.0's and they have the 65e.

handfulz28

Flyer, my 3/4 ton Yukon XL with the 8.1L is bolted to an 85E; different option code for the tranny versus the 6.0L. I think a lot of the "production" info called it a 4L80E-Heavy Duty, that's why you won't see it referred to as an 85.

The 8.1L SUVs get the 85E, the 8.1L/Duramax trucks get the Allison.

TieRod

From my understanding the 80E was not rated for the torque the 8.1 made, thats why they developed the 85E.

gandolphxx

All K2500 Avalanches with the 8.1L come with the 4L85E standard _ suspect the same is true of the K2500 Subs with 8.1L

TieRod

gandolphxx, Man where have you been? I haven't seen you on here in a long wile. The first time I came across your posts you just got your Avalanche done. I thought man thats a big a$$ truck to going that fast.

foxspy

iTrader: (1)

1991-93 454SS' came w/ 4L80Es as well.

gandolphxx

I have it lifted 4" now, industrial strength bumper - but it still can leave 10 - 15 feet of rubber. I have been experimenting with various cold air schemes, have it down to an IAT of ambiant + 7 degrees on the highway, which works out to ambiant + 30 at the intake after the intercooler. I am fighting a weird issue with the IAT/MAF in that it spikes to 120 when I hit it - all the cladding is now Superliner coated, truck is all black.
gandolphxx

SnakeOiler

iTrader: (6)

According to the powertrain site, the following vehicles can be supplied with the 4L80-E (MT1) and 4L85-E (MN8):

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)
Hummer H1 (MT1)
C 3500 HD (MT1)
W Series (MT1)

BTW, can someone explain gearbox torque? The site shows maximum engine torque and maximum gearbox torque. I understand max. engine tq.

James B.

iTrader: (1)

All 1500HD/2500HD/3500 trucks with a 6.0L LQ4 come with a 4L80-E.
All 2500 Suburban and Yukon XL with the 6.0L LQ4 come with a 4L80-E.
All 2500 Suburban, Yukon XL, and Avalanche with the 8.1L come with the 4L85-E.

No 1500's come with the 4L80-E.