Originally Posted by Learjet
Why would you not want the converter to lock up? That is a good way to overheat your transmission.
I learned something. Also got a little concerned that my 'plan' wouldn't work.
With a 3:31 rear towing my upcoming purchase of a 27' Hyperlite my plan was to barely use 6th gear on the open road.
I was concerned about the constant locking and unlocking of the clutches in the Torque Converter (TC) and about the constant down-shifting from 6th to 5th and back up. Which, in my experience is fairly common on the older trannies and leads to them going up in smoke.
Turns out that --
6R80 Specs & Ratios - F150 Hub
6R80 Specs & Ratios
It features torque converter lockup capabilities in all 6 gears
Hope that's true because I don't believe I will be able to handle 6th gear lockup with all that resistance behind me