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 3
Rated up to 600 HP at the crankshaft
Rated up to 600 ft-lbs of torque at the crankshaft
Custom-built Yank Performance converter
9" or 10" Lock-up billet converter
Stall range: 2600–3600 RPM
Raybestos Stage I frictions
Master overhaul kit with hardened steels
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
Heat-treated input shaft
Heat-treated main shaft
Heat-treated forward steel clutch hub
Heavy-duty intermediate sprag
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 OEM steel pan
Filter
TransGo reprogramming kit with:
Valve body recalibration
Shift command improvements
Blueprinted pump & valve body
Updated boost valve
Updated TCC regulator valve
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
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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