700R4 build thread.

[bry593]

Recently picked up a '92 700R4 coded for an R truck or G Van.

Upon teardown, I discovered the solenoid to be plugged with a ball and the wire harness missing. Checking the pump, I did not find a non-l/u valve.

Removing the valve body, I found it has a complete TCC valve kit and this does not match a '92 transmission.

There casting code on the valve body is 4256. The body has 2 holes retaining the 1-2 shift valve bushings. It also has a "B" stamped into the casting. Upon teardown, I found it has a two piece, lo-range downshift valve as you show in the pic above^

My question is whether this valve body really is compatible with my '92 case, seperator plate "EA" and auxillary valvebody. It is difficult to say whether the previous builder knew what they were doing as I got it as a "rebuild gone bad". The 3/4 stack was completely smoked, but I also found the 3/4 piston seal lip torn about 1/2".

Any insight is appreciated!