[Chevyrestorerman]

The Transgo shift kit comes with a new Converter regulator/isolator valve which works in a worn VB. GM and SRTA rebuilt VB's come with oversized valves which Transgo does provide a part number for a replacement valve in this case. The new valve that comes in the shift kit replaces all original equipment .441 diameter isolator and converter valves. No reamer is required when installing the Transgo isolator/converter regulator valves into the VB.

What type of Lockup plate does your TC Man install in your TC's ? The Transgo Converter regulator/isolator valves work with all lockup plates.

So when you install YOUR rebuilt transmission back into the vehicle and when the TC locks up and it has a bit of a shudder you can tell your TC man that his TC is bad. Right ?

Looks like you are installing a corvette servo, do you think this servo needs to match the accumulator in the VB. This accumulator is located in the VB next to the Pressure control switch, this accumulator housing bushing will have a code on the end of the housing (example: D,DX,R). This code will allow you to install the required spring/ OZ tension for the 2nd servo of choice.

Would you change your engine oil without changing the filter, I will not "rebuild" a 4L60E transmission without a transgo shift kit even in a vehicle with 225K miles. If it aint broke, than why did you pull the transmission out of the vehicle ? REDO or REBUILD, you make the choice.