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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.

'Tis the Season for Vehicle Winterization

'Tis the Season for Vehicle Winterization

GEARSTAR PERFORMANCE 6 minute read

Winter is here, and this is not about the popular Game of Thrones series but about your vehicle. Your vehicle needs proper maintenance during the colder...

Performance Evolution of Ford Automatic Transmissions

Performance Evolution of Ford Automatic Transmissions

GEARSTAR PERFORMANCE 6 minute read

The era between 1964 and the 1980s was remarkable in the automobile industry. During this period, millions of Ford vehicles – i.e., cars and trucks –...

Here's How the Chevy 4L60E Transmission Shifted V8 Engines for Decades

Here's How the Chevy 4L60E Transmission Shifted V8 Engines for Decades

GEARSTAR PERFORMANCE 6 minute read

The 4L60E refers to a series of General Motors transmissions manufactured and introduced for sports utility vehicles, cars, and trucks. It significantly...

The ABCs of a 4 Speed Automatic Transmission

The ABCs of a 4 Speed Automatic Transmission

GEARSTAR PERFORMANCE 6 minute read

Automatic transmissions are mechanisms designed to shift the gears of vehicles with the increase or sudden decrease of speed. Since the mechanism is automatic,...

Clogged Transmission Filter Warning Signs (and How to Fix It)

Clogged Transmission Filter Warning Signs (and How to Fix It)

GEARSTAR PERFORMANCE 5 minute read

Transmissions are composed of several components designed to ensure the gear system functions seamlessly. One such component is the filter or strainer. The primary...

6 Automotive Things to Be Grateful for This Thanksgiving and Beyond

6 Automotive Things to Be Grateful for This Thanksgiving and Beyond

GEARSTAR PERFORMANCE 6 minute read

It's Thanksgiving month again, and time to be eternally grateful for everything life has thrown our way - the good, the bad, the ugly, and we survived...

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