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TRANSMISSION

Why the GM 4L75E Transmission is a Top Choice for Performance Enthusiasts

GEARSTAR PERFORMANCE 6 minute read

The GM 4L75E transmission is a high-performance automatic transmission ideal even today for car enthusiasts seeking durability and power. Enhanced to...

Will a 4L60E torque converter fit a 4L65E?

Will a 4L60E torque converter fit a 4L65E?

GEARSTAR PERFORMANCE 6 minute read

Will a 4L60E torque converter fit a 4L65E transmission? While doable, swapping from an older transmission to a newer or stronger one may call for an...

Turbo 400 vs. 4L80E – Which Transmission Delivers More Power?

Turbo 400 vs. 4L80E – Which Transmission Delivers More Power?

GEARSTAR PERFORMANCE 6 minute read

The Turbo 400 (TH400) and 4L80E are two powerhouse transmissions, but which one delivers more power? Let’s look at their differences, construction...

How Do I Know if My Transmission Solenoid is Bad?

How Do I Know if My Transmission Solenoid is Bad?

GEARSTAR PERFORMANCE 5 minute read

A bad transmission solenoid can cause delayed or erratic shifting, transmission slipping, or even failure to shift gears. Warning signs include harsh...

Are 4L60E and 4L65E Interchangeable? Understanding the Differences and Compatibility

Are 4L60E and 4L65E Interchangeable? Understanding the Differences and Compatibility

GEARSTAR PERFORMANCE 6 minute read

The 4L60E and 4L65E have many similarities, to the point that some car enthusiasts skip selling and buying a new transmission, and instead learn to...

Can You Drive with a Bad Transmission Valve Body? What You Need to Know

Can You Drive with a Bad Transmission Valve Body? What You Need to Know

GEARSTAR PERFORMANCE 7 minute read

Driving with a bad transmission valve body can cause serious damage to your vehicle’s transmission, harm your driving experience, or even result in avoidable...

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