Quote Originally Posted by beav View Post
Why "impossible"? Some thought that the 600+ rpm lock limit was impossible too.
Its a hydraulic limitation of the 5-speed valve body....it has nothing to do with tuning. You cant "tune around" a blocked off fluid passage in the valve body casting.

If you manually apply (IE, just ground the control wire) the TCC solenoid on a 5-speed in 1st gear, nothing happens.