UP TO 650 HP
The 4L60E is one of General Motors’ most widely used automatic transmissions, serving in everything from daily-driven trucks and SUVs to high-performance street builds. While the factory transmission is known for several common failure points, the platform offers tremendous upgrade potential when properly rebuilt.
Mad Dog Transmissions completely tears every 4L60E down to the case, replacing all wear components while addressing known weaknesses through upgraded hard parts, hydraulic improvements, and performance-calibrated components. Available in multiple performance levels, the 4L60E can be configured for anything from a reliable daily driver to a serious street and strip vehicle.
Whether you’re replacing a failed factory transmission or building a high-horsepower project, the 4L60E remains one of the most versatile and proven transmission platforms available.
| Year Range | Make | Model | Engine | Notes |
|---|---|---|---|---|
| 1999-2007 | Chevrolet | Silverado 1500 | 4.8L, 5.3L, 6.0L V8 | |
| 1999-2007 | GMC | Sierra 1500 | 4.8L, 5.3L, 6.0L V8 | |
| 1995-2013 | Chevrolet | Tahoe | 5.3L V8 | |
| 1995-2013 | GMC | Yukon | 5.3L V8 | |
| 1998-2002 | Chevrolet | Camaro | 5.7L LS1 V8 | |
| 1998-2002 | Pontiac | Firebird | 5.7L LS1 V8 | |
| 1997-2013 | Chevrolet | Express Van | 4.8L, 5.3L, 6.0L V8 |
| Problem Name | Problem Description |
|---|---|
| Sun Shell Failure | Factory sun shells are prone to cracking and stripping under increased torque loads. |
| 3-4 Clutch Failure | Insufficient clutch capacity and heat buildup commonly cause premature clutch failure. |
| 1870 Trouble Code | Valve body wear can cause converter clutch slip and trigger GM code P1870. |
| Servo Wear | Factory servos lose holding capacity over time, resulting in soft shifts and band wear. |
| Pump Wear | Pump wear reduces hydraulic pressure and contributes to clutch slippage and transmission failure. |
| Gear | Ratio |
|---|---|
| 1st | 3.06:1 |
| 2nd | 1.63:1 |
| 3rd | 1.00:1 |
| 4th | 0.70:1 |
| Reverse | 2.29:1 |
