Rebuilds & Upgrades

• 4L60E
• 700R4
• Rebuilds & Upgrades
• Builds, Features & Press
• Transmission Tech Explained
• Buying & Comparison Guides
• Install & Swap Guides
• Maintenance & Fluids
• GM Transmissions
• Torque Converters
• Gearstar News & Events
• Troubleshooting & Symptoms
• Ford Transmissions
• Mopar Transmissions
• 4L80E / 4L85E
• 4R70W / 4R75W
• Ford AOD / AODE
• 4L65E / 4L70E / 4L75E
• TH350
• 200-4R
• 6L80E / 6L90E
• Mopar 727 / NAG1 / 545RFE
• TH400
• Ford E4OD / 4R100
• Ford C4 / C6

Upgrading a 4L70E Transmission

Gearstar Performance January 26th, 2018 6 minute read

The 4L70E is one of several GM-produced electronic automatic transmissions developed as a successor to the Turbo-Hydramatic line of transmissions, some...

Questions You Should Ask Before Upgrading Your Ride

Gearstar Performance December 19th, 2016 3 minute read

There are many questions you should ask before upgrading your ride. It is important to consider what the vehicle will be used for and what you're looking...

Pontiac Turbo 400 Upgrades Gearstar Performance Transmissions

Gearstar Performance October 11th, 2016 1 minute read

Pontiac Turbo 400 upgrades GearStar Performance Transmissions. Located in Akron, Ohio, Gearstar specializes in providing custom-built, high-performance...

Upgrading GM 4L70E Transmissions Via Gearstar

Gearstar Performance October 5th, 2016 3 minute read

Gearstar performance transmissions are all custom. Building each transmission with to the specific needs of the customer is important to Gearstar. We're...

« Back to Blog