I recently learned that Transgo has a new Hydraulic lockup kit (700 LU)
This setup requires no electrical control at all to work.
The kit consists of some new valves and springs and such and allows the trans to lockup in 3rd and 4th and also gives part throttle unlock.

The reports I am hearing are that the users are very happy with the results.

I stumbled onto this just this morning while scrounging around for a good way to dial in the 700 on my 91 Burb after the conversion.

Most tranny supply houses that sell transgo should be able to provide this kit.


Best
Robyn