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.
A Look Inside Gearstar Transmissions
One of the most common components in today’s classic trucks is an overdrive automatic transmission, and one of the most popular of the breed is the...
A New Transmission for the 'ol Sedan Delivery
The ‘ol ’55 puts at least 10,000 miles on it every year and that old 350 auto trans. has been hauling magazines for the past 10 years, and well, you do...
Classic Trucks
One of the most common components in today’s classic trucks is an overdrive automatic transmission, and one of the most popular of the breed is the...
GM Torque Converter: Unlocking Power and Efficiency
Upgrade your project car with a rebuilt GM torque converter for unmatched power and efficiency. Learn how custom stall speeds, billet components, and...
Ford AOD Valve Body: Key to Optimizing Your Transmission
The Ford AOD transmission is a stalwart of classic muscle cars and trucks, but its stock valve body – the “brain” controlling gear shifts and fluid flow...
Enhance the Performance of a Ford AOD Transmission Pan
The Ford AOD (Automatic Overdrive) transmission is a workhorse, powering classic Mustangs, Crown Victorias, and F-150s for decades. But if you’re pushing...