4l80e lock up switch, Aug 21, 2025 · One such transmission is the 4L80E automatic from General Motors. Upgrade your heavy-duty GM vehicle with our performance remanufactured 4L80E transmission, expertly rebuilt to deliver exceptional durability, torque-handling, and smooth shifting. This particular automatic transmission has found its way into numerous heavy-duty vehicles, but interestingly, has also been used Manufactured by General Motors in 1991, the 4L80e was used to replace the strong TH400, which was first built in 1964, though with additional upgrades. This build will handle well over 1000 HP assuming moderate RPM range (less than 7000 rpm), average or lighter weight vehicle, and no large N2O usage. 4L80-Es were optioned only in Chevrolet/GMC pickups, vans, and commercial vehicles, and the Hummer H1. . The 4L80e is 26. The Stage 3 4L80E build adds the billet input shaft and rollerized billet forward hub for applications above 750 HP. 4L80E Transmissions - Durable, reliable, and ready for action. 4 inches long and features 17 bolts. It was the 4-speed electronically commanded evolution of the 3-speed Turbo-Hydramatic 400, first produced in October 1963. It was the 4-speed electronically commanded evolution of the 3-speed Turbo-Hydramatic 400, first produced in October 1963. Perfect for Silverado, Tahoe, Suburban, Sierra & Yukon. A few of the new features added with the 4L80E in comparison to its predecessor were electronic controls, overdrive capability, and a lock-up torque converter. The 4L80e featured a die-cast aluminium case which accounts for its sturdiness. The GM 4L80E is a heavy-duty, four-speed overdrive transmission built to handle high horsepower and torque. Dec 23, 2025 · The 4L80E transmission is a heavy-duty, durable automatic transmission primarily found in full-size Chevrolet and GMC trucks, vans, and SUVs from the early 1990s through the mid-2000s. It's a top choice for demanding applications like towing, racing, and off-road builds. Upgrade your Chevy/GMC today! Comprehensive guide to the GM 4L80E automatic transmission — history, specifications, development, technology, and Jeep conversion adaptability. Nov 18, 2025 · The 4L80E transmission was first introduced in 1991 and served as a replacement for the TH400 transmission.


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