A855 - 5 Speed

6PakBee said
I would really appreciate at least one example of this. I know this is a Mopar forum but I also have a couple AMC's with the T-10. AMC deliberately went from the 2.64 and 2.43 first gear ratios to the 2.23 to get a higher transmission torque rating. I'm thinking about putting the 2.64 first gear ratio behind a warmed over 401 and wondering if that is a prudent move. T-10 information can be confusing. I am under the impression that there was the original T-10, then the First Generation Super T-10 that was developed in the mid-'60's with the Second Generation super T-10 being developed in the mid '70's. But I can't back any of this up.

there is a section in this book on T10s
https://www.amazon.com/dp/1934709298/?tag=fabo03-20

some will break behind a 4 cylinder some are MUCH more robust
problem is they made stuff called t10 for years
the essence of what is says is really.... unless it was sold as an Aftermarket "Power Brute" or aftermarket Super T10 transmission there is no guarantee about it having all the good stuff in respect to metallergy and strength i.e too many flavours of t10 (4 cylinder AMC, Big v8 AMC, 1960s B body Mopar 1980s compact cars on and on) and too many price points to make general comment on stength without ID-ing the transmission and its original application, and then, assuming any restoration work replaced like with like or like with better.
not the be all and end all but a helpful book if you need to take any common 4 or 5 speed apart to fix something. to do that properly you need to know history, swap over years, and how to ID what you have to get the right parts.... this is all covered.

dave