Hi Guys Perhaps a bit out of place here but I need some help. I have coupled a 4n71b to a Studebaker V8 in a GT Hawk. The transmission has a valve body shift kit so it should handle the 160Kw this thing produces. On the first test drive the tranny slipped a lot. After a lot of oil level checks I think it is OK, Measured and checked the modulator rod, it was 0.5mm short, new rod and the slipping has gone but the shifts are flared 1-2 and 2-3. OD shift OK. I have played with different rod lengths but not much change. The Stude produces a heap of vacuum, (22in at idle) it will cruise at 16-18in. I think its playing up with the vacuum modulator. My next effort will be to put the measured rod back and play with an adjustable modulator. As a side issue I had a torque conerter made to suit with no lockup. I have deleted the pipe from the rear of the transmission to the bellhousing which I beleive is for the lockup only. is that the pipes only function? Any assistance would be greatly appreciated. Allan