TH400.. most excellent. What ratio rear axle gear do you have and what diameter tires on the rear?
Not sure why that matters as it's still 1:1 in high gear whether it's a TH400 or TH350.
Dave,
The TH400 uses an electronic switch that basically operates a dump valve for the kickdown. They can be very hard to adjust and finicky, so many guys don't both hooking it up (me included).
The TH400 is actually a more stout transmission and there's no reason not to run it.
