Chevrolet Supermatic 4L80E. This is a four-speed automatic transmission. If an automatic valve body is used, then a standalone transmission controller is required to control the transmission.
4L80E Level 5 transmission designed for LS engines
Rated up to: 1000 HP at the crankshaft
Rated up to: 900 ft-lbs of torque at the crankshaft
Custom-built 10” lock-up billet Yank Performance converter
Custom stalled at 3200+ RPM
Raybestos Stage I frictions
Expanded capacity forward clutch drum
Extra capacity second gear clutch assembly
Expanded the capacity of the third clutch drum
Updated molded steel direct clutch piston
300M input shaft
300M main shaft
300M forward clutch hub
Billet direct drum with 36-element oversized sprag and higher capacity frictions
Billet sprag cage (vs OE plastic)
TransGo reprogramming kit with valve body recalibration & shift command
Blueprinted pump & valve body
Updated boost valve
Updated TCC regulator valve
Updated reverse band
Wide kickdown band with a new apply piston
New low roller assembly
New Torrington bearing kit
New bushing kit
New thrust washer kit
New internal wiring harness
New manifold pressure switch
New EPC solenoid
New PWM solenoid
New input & output speed sensors
New 1–2 shift solenoid
New 3–4 shift solenoid
Master overhaul kit with hardened steels
Filter
Transmission mount
New OEM steel pan
| 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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