Chevrolet Performance Transmission Dimensions

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Chevrolet Performance Transmission Dimensions

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Hydra-Matic Transmission Family Trees


4L60-E Series
The Hydra­Matic 4L60/4L65/4L70 family of transmissions is
differentiated primarily by gearset design. Each planetary
gearset in the 4L60 has four pinion gears. There are five pinion
gears in the 4L65 and 4L70, but the 4L70 has a higher torque
rating. The external dimensions and mounting provisions
are identical for each transmission in the 4L60 family. The
maximum torque capacity for each includes:
4L60­E – 380 lb.­ft.
4L65­E – 430 lb.­ft.
4L70­E – 495 lb.­ft.


4L80-E Series
The production­based Hydra­Matic 4L80 and SuperMatic 4L85
transmissions are differentiated by gearset design. Each
planetary gearset in the 4L80 has four pinion gears, while
the 4L85 has five pinion gears. The external dimensions and
mounting provisions are identical for each. The maximum
torque capacity for each includes:
4L80­E – 440 lb.­ft.
4L85­E – 685 lb.­ft.

 


 

Transmission and Components

Get in Gear with a Transmission Tailored For your PowerTrain

 

Differences between 4L80-E and 4L85-E
(4L80 Family Transmissions)
The 4L80-E gearsets have four pinion gears, while the 4L85
comes equipped with five pinion gears in each. External fit
form and function are identical between the two variants of
4L80-E and 4L85-E transmission assemblies.
Maximum engine torque capacity rating for these units are:
Production 4L80-E – 440 lb ft
Supermatic 4L85-E – 685 lb ft

IMPORTANT! Chevrolet Performance no longer includes a
torque converter with transmissions. We now offer a variety
of torque converters for 4L60- and 4L80-series transmissions
that are tailored for the wide variety of our crate engines’
performance specifications. Select the transmission that’s just
right for your project vehicle and select the torque converter
to match its performance.
NOTE: Installing an electronically controlled automatic
transmission in an older vehicle with a mechanical
speedometer requires an aftermarket signal converter.
Get in Gear with a Transmission Tailored
For your PowerTrain