Big 3 Engines

Engines • Transmissions • Installation

Find your transmission replacement or rebuild.

Start with your vehicle brand or transmission code. Compare an assembly purchase with a rebuild or installation quote at our East Texas shop.

Get my transmission quote

Shop by brand

Ford

Browse the Ford transmission catalog and confirm the original unit, controls and application before choosing an assembly.

Browse Ford transmissions

Know your GM transmission code?

All 10L versions are customer-core rebuilds only. If your code is not listed, ask us about your specific unit.

Assembly only or installed service?

Catalog assembly prices and installed rebuild packages cover different scopes. Confirm the converter, fluids, controls, programming, installation, core terms and written warranty in your specific quote. Send the VIN, model year, engine, 2WD/4WD configuration, transmission identification and diagnosis.

Inside the transmission

More than a case and a part number.

Follow our transmission work from the opened unit to the components on the bench. Bring us your vehicle details and symptoms so we can plan the right repair or replacement.

Transmission gear and clutch assembly on the bench
Valve-body passages and components
Clutch drum and friction plates
Transmission case in the shop
Transmission assembly during bench work

29 seconds inside the job

Watch the teardown unfold.

A stop-motion edit made from our shop’s sequential photographs. An opened transmission, component removal and a closer look inside.

An edited shop-work sequence, not an installation or repair tutorial.

Have a project in mind?

Tell us what you drive and what you want to change.

Discuss my transmissionTalk to Big 3 · 903-262-9502

Actual Big 3 shop projects shown. Photos illustrate different jobs and stages of work; included parts, fitment, finish and services are defined by your selected listing or written quote.

Transmission gear and clutch assembly on the bench

Transmission gear and clutch assembly on the bench