Master-Built GM 6L80
Stop gambling on cheap freight transmissions. We build heavy-duty, bench-tested 6L80s right here in Plant City. Upgraded pump stators. Billet converters. No assembly lines.
Billet & Sonnex Upgrades
- No cheap factory replacements. Every unit gets a heavy-duty billet torque converter and Sonnax pump upgrades to permanently fix the "rumble strip" shudder and drum cracks.
Direct Tech Support
- If you hit a snag on the TEHCM or the GM Fast Learn protocol, you get a direct phone lifeline to the 40-year master builder who assembled your unit.
Local Hotshot Delivery
- No crating, no waiting on freight trucks, no shipping damage. We hotshot the transmission directly to your shop in Central Florida so you can get your customer back on the road.
Meet the Master Builder: 40 Years of Diagnostic Mastery
For four decades, Ralph has been the go-to authority around town for complex auto repair and full-system diagnostics. If a vehicle had an electrical or mechanical nightmare that nobody else could figure out, it ended up in his bay.
His ability to trace complex problems to their exact root cause started early. At 12 years old, stuck at home recovering from scarlet fever, he dug out his dad's TV repair correspondence course. The family had two broken TVs—one with picture but no sound, the other with sound but no picture. Ralph taught himself the circuitry and fixed them.
Now, after 40 years of solving every kind of automotive headache, he is taking that elite diagnostic mastery and focusing it entirely on one thing: engineering heavy-duty, precision-built transmissions. When you buy a Hillsborough Transmission, or call us for technical support, you aren't talking to an assembly-line parts swapper. You are getting direct access to a 40-year diagnostic master.
