Chevrolet Supermatic 4L85E four-speed automatic transmission. If an automatic valve body is used, this will require the use of a standalone transmission controller.
4L85E Level 3 is designed for Big Block / Small Block Chevrolet engines
2WD applications
Rated up to: 1000 HP at the crankshaft
Rated up to: 1000 Ft-Lbs torque at the crankshaft
Converter: Custom-built, custom-stalled 10” or 11” Billet Yank Racing
Stall speed: 2600–3600 RPM
Master overhaul kit with hardened steels
Raybestos Stage 1 frictions
High-energy wide bands
New bearing kit
New bushing kit
New thrust washer kit
New low roller sprag
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 heavy-duty sprag, race, and modified plates
Heavy-duty 2nd gear apply piston
Updated boost valve
Updated TCC regulator valve
Blueprinted pump & valve body
TransGo reprogramming kit with valve body recalibration & shift command
High flow filter
New shift solenoids
New EPC solenoid
New PWM solenoid
New manifold pressure switch
New input & output speed sensor
New internal wiring harness
Transmission mount
| Gear Ratios | 1st | 2nd | 3rd | 4th |
| GM 4L80E/ 4L85E | 2.480 | 1.480 | 1.000 | 0.750 |
| 2WD Dimensions |
| Measurements are taken from the mounting surface where the trans meets the engine block to the tip of the tailshaft |
| Total Length: 31″ |
| Distance to trans mount center: 30 1/2″ |
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