Originally Posted by drp6982
one of the Hemi engine builders (A vendor on many other forumz) PWR has a TH400 but converted it to a 6spd because he wanted something more for the street
The Turbo 400 is a great trans, but it's a 3 speed. PWR is probably programing the TC to lock and unlock in every gear so that it seems that it is a 6 speed. Third gear in the 400 is 1:1, no overdrive. The only way to make a 400 truly a 6 speed is to put a Gear Vendors overdrive unit behind it.