Thanks
I found these part from transmission center.
How do you feel,will this work ok with 4,11:1 rear end and 0,67 OD ratio (r200R4)Car is -50 fleetline chevy.
#71V. Universal adjustable vacuum switch for any application that may benefit with its use
Unlike the GM switch that has been available for years, this switch allows the vacuum trigger point to be adjusted between 1 and 6 inches of vacuum. This switch can also be wired-in to be normally open or closed. $43.0
Or is this better
#71V2. Also available in a 6 to 22 inch model. Cost $43.00
Or this one
#71. Vacuum switch to cut the power to the torque converter lock-up switch under medium to heavy throttle. This will feel like another gear on higher stall speed torque converters. Cost 49.00. (This is a normally open switch. It takes 7 inches or more of vacuum to lock the converter and 3 inches or less of vacuum to unlock the converter.)
