Overview

GearStar GM 4L85E Level 4 Transmissions

GearStar offers GM 4L85E Level 4 transmissions for a variety of rear-wheel-drive applications. They are compatible with Chevy small block Gen III/IV (LS-based) engines from 1997 and up; and select Chevy small block Gen 1 and big block Gen V, Gen VI, and Mark IV engines from 1955 and up. Performance specs include 1,500 hp and up to 1,500 lbs.-ft. of torque.

Transmission details:

* Converter: Custom built and custom stalled 10 or 11 in. billet yank racing
* Stall: 2,600-3,600
* Master overhaul kit with alto hardened steels
* Raybestos Racing Blue Gen II frictions
* High-flow filter
* 2 Transgo reprogramming shift kits
* GearStar full race shift kit
* Carbon fiber heavy-duty reverse band
* Wide carbon fiber kickdown band
* New bearing kit
* New bushing kit
* New thrust washer kit
* New low roller sprag
* 300M hardened input shaft
* 300M hardened intermediate shaft
* 300M forward hub
* High-capacity pump assembly with new gears
* New 5-pinion reaction planetary gear set
* New 5-pinion low planetary gear set
* Extra capacity 2nd gear clutch assembly
* Extra capacity 3rd gear super drum with wide heavy-duty sprag, race, and modified plates
* Custom machined billet forward and direct drum pistons
* Heavy-duty 2nd gear apply piston
* New shift solenoids
* New EPC solenoid
* New PWM solenoid
* New manifold pressure switch
* New input and output speed senor
* New internal wiring harness
* Updated boost valve
* Updated TCC regulator valve
* Blueprinted pump and valve body
* Transmission mount
* This transmission requires the use of a standalone controller in non-OEM applications
* All transmissions are custom-built by one of five master techs from start to finish and DYNO tested with converter the equivalent of 100 miles to ensure that transmission and converter package are in perfect operating condition before they leave the GearStar facility.

Applications

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