Forum Discussion
larry_barnhart
Sep 28, 2018Explorer
We had one of the first 2001 8.1 liter in our 3500 that had only one issue as well as most. It was the NSB switch. The Allison worked great when we traded for the 05 duramax at 58000 miles. This trannie was great for towing folks as Ford and Dodge improved their products.
chevman
chevman
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44,054 PostsLatest Activity: Dec 22, 2025