200-4R lock-up control

[dontlifttoshift]

I think the 200 used a vacuum switch stock. I like the vacuum switch option as it will unlock under high load situation like hills and passing cars. If you have a high stall convertor you can really feel it come in and out of lock up....it's like having another gear. We have used them on 700s as well.

We have suceesfully used the Bowler timer setup as well, it unlocks with the brakes and with a downshift as it also runs through a 4th gear pressure port.



The problem with a toggle is if you forget to lock it up you are creating an enormus amount of unnecessary heat in the trans when cruising.