Built to Hold
Build guides, transmission tech, and install notes from the Gearstar shop floor. Every unit we ship is assembled by one builder, matched to your combo, and dyno-tested before it goes out the door. This is where we show the work: what holds, what grenades, and how to spec it right the first time.
What Happens If Your 700R4 TV Cable is Out of Adjustment?
SUMMARY:Throttle valve cables manage the hydraulic pressure and shift timing of your transmission. When the TV cable isn’t in sync with your throttle, it can affect...
Will a 4L60E Torque Converter Fit a 4L80E Transmission?
Summary: Will a 4L80e swap-60E torque converter fit a 4L80E? The short answer is no. These transmissions have critical differences, such as input shaft design...
Why Proper Cooling is Critical for GM Transmissions: Prevent Overheating in Your 4L70E, 4L75E, or 4L65E
Effective cooling is essential to maintaining the performance and lifespan of older GM transmissions like the 4L70E, 4L75E, and 4L65E. Low or contaminated...
Is a 4L65E Stronger Than a 4L60E?
Wondering if the 4L65E transmission is stronger than the 4L60E? In short, yes. The 4L65E is an upgraded, heavy-duty 4L60E introduced initially for trucks, and...
How Much Horsepower Can a 700R4 Transmission Handle?
The 700R4 transmission is a classic 4-speed automatic transmission, held in high regard among car enthusiasts for its quick launches, and off-the-line...
Why the GM 4L75E Transmission is a Top Choice for Performance Enthusiasts
The GM 4L75E transmission is a high-performance automatic transmission ideal even today for car enthusiasts seeking durability and power. Enhanced to...