I am fairly new to this site and am still navigating around various topics, but have yet to find anything about this. I have an 01.5 with an automatic transmission, I dont really trust this tranny as my truck gets older, I am paranoid about it failing on me, I drove a 3500 with a 6 speed a couple of years back and loved it, has anyone done an auto to 6sp conversion, also how about any type of allison replacement? I know those tranny are pretty bullet proof, please weigh in on this as in the future I'd like to do a twin turbo conversion,

 

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heres a whole thread about Allison swap theres a couple of guys that have done it. i'm planning on doing it as soon as i can afford

https://www.dieseltruckresource.com/...d.php?t=123026

 

Use your 'search' function - has by thread, by forum, by site functions

 

Thanks a bunch for the Allison thread, I am still trying to find out more about the possible 6 speed conversion, I will try the search feature