The Ultimate DIY Guide: 8L80/90 Transmission 4WD to 2WD Conversion

This video shows how easy it is to convert your 8L80/90 to 4WD or 2WD.

Converting an 8L80/8L90 transmission from 4WD to 2WD is a common requirement for LS/LT engine swaps, but there are critical details that can ruin your transmission if missed. In this video, we walk you through the step-by-step disassembly and reassembly process, including the tools needed and the specific pitfalls to avoid.

⚠️ CRITICAL NOTE: Pay close attention to the thrust bearings during assembly to ensure they do not bind — this is the #1 cause of failure in these conversions.

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