Originally Posted by kw89425
I like the simplicity of the th400 and I dont need overdrive. I have 4.11 and 38.5's I could travel on the interstate if I wanted to.
Well there is alot more to it than that...
First I want a looser Torque converter in the high 2.8K-3.2K stall range to get into the torque band at the stall off the line and allow for flash if necessary.
Better off the line launch..... Then there is highway speed where I regularly run 100+MPH in road race courses and want the low heat build up of a lock up converter.
As good as the TH400 is ... and I built mine with the best of the best...it can't do all that what A 4l80 will do without breaking a sweat
I have 3.73's and 35" Toyo's and I still want the engine running a lower RPM when my gas mileage is 6 miles to the gallon.
Right now I run out of redline RPM's and of axle gear at 135 MPH... I need OD