TH350 Valve Body Modded

I recently picked up a TH350 donor for my C10 to rebuild. In the process of disassembly, I came across a question. The valve body was modified (the previous owner used it for "desert racing"), bypassing the Direct Accumulator Piston and Intermediate Servo. The shaft for the Direct Accumulator Piston has been removed from the valve body and the piston was tapped and plugged.

My question is this: can I somehow replace that shaft in the valve body, or am I in it for a replacement valve body that retains the shaft?

I want to return to OEM function as this is a daily driver. Pics below for reference.

Should be able to. Was the hole for the shaft also threaded and plugged?

quicksilver702 said:

I recently picked up a TH350 donor for my C10 to rebuild. In the process of disassembly, I came across a question. The valve body was modified (the previous owner used it for "desert racing"), bypassing the Direct Accumulator Piston and Intermediate Servo. The shaft for the Direct Accumulator Piston has been removed from the valve body and the piston was tapped and plugged.

My question is this: can I somehow replace that shaft in the valve body, or am I in it for a replacement valve body that retains the shaft?

I want to return to OEM function as this is a daily driver. Pics below for reference.

Click to expand...

Check to see if the direct clutch was dual-fed internally. If so, that's likely the reason the 2-3 accumulator circuit was blocked off.

Also, measure the 1-2 and 2-3 feed orifice diameter - chances are they were enlarged sigificantly for use with a high stall converter. Was the 1-2 acc spring shortened? Any check balls left out? If you want a more or less stock-shifting transmission, you'll want to investigate those things if you havent already done so.