Come on guys!!!
To tell me all you guys with converters never upgraded to hardened input shafts??? Share the wealth of 411 before a Bro makes a mistake!!! Pleaseeeeeeeeeeeee!!!
Lentech, Art Carr, & TCI all have a one piece hardened input shaft. The onyl thing about the Art Carr is it uses a C6 spline count(31). The Lenetch and TCI use the same spline count(35). With the one piece shaft you loose lock up.
Now you can get the harden input shaft that for lock up that replaces the stock one. Its an easy swap to, pull one out and slide one in. Checkk Holcomb motorsports they sell them and plus can check out this place.. http://www.ford-aod.com/#Performance Parts