Video Tech: Installing TCI’s 4x Four-Speed Transmission

Every person that builds a street/strip car wants a vehicle that won’t be miserable to drive to a show or take on a cruise, and be able to make some passes at the track. A transmission that doesn’t zing the engine to the moon with RPM plays a big role in this, and the 4x Four-Speed unit from TCI is great at keeping the RPM in a manageable range. In this video, we learn how easy it is to install one of these four-speed automatic transmissions.

The 700R4 version of the 4x Four-Speed transmission is a fully mechanical transmission that doesn’t require any type of electronics to function. TCI also has a 4L80E-based version that can use a TCI transmission controller or an OEM controller from GM. Both of these transmissions have an overdrive gear with lock-up, so they’re perfect for street/strip cars, and they can handle up to 750 horsepower, depending on which version you select.

TCI offers the 4x Four-Speed transmission in a package for GM, Ford, and Dodge engines. These packages include the transmission, a flexplate, the correct bellhousing, hardware, and other items. This takes all of the guesswork out of getting the parts you need for the 4x Four-Speed to fit your application — you just need to select the horsepower level of transmission you want or need.

The 4x Four-Speed transmission will come with written instructions from TCI, but the company wanted to take things a step further and created this installation video. In the video, you’ll see each step of the installation process performed, plus TCI also sprinkles in some good tips to help make the process easier. If you’ve already purchased a 4x Four-Speed transmission, this is a must-watch video. To see all the different 4x Four-Speed transmission options check out TCI’s website right here.

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About the author

Brian Wagner

Spending his childhood at different race tracks around Ohio with his family’s 1967 Nova, Brian developed a true love for drag racing. When Brian is not writing, you can find him at the track as a crew chief, doing freelance photography, or beating on his nitrous-fed 2000 Trans Am.
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