I have a TH350 trans \transgo shiftkit \2800 stall. When I put my can in gear it will not move. Trans oil is clean. Sometime the car will run no issues then sometime it will not. At first I thought it was the kickdown cable I replaced it no improvement. I am thinking it maybe the valve body any suggestions?

http://www.chevelles.com/forums/showthread.php?t=116056

Must be alot of people in agreement that a sticking kickdown cable is your problem otherwise you would be getting advise in other directions. IMOP If your tv was stick either way it would not cause a "NO MOVE " situation. There are a few things that could be the cause though. Improper fluid level,low oil pressure,manual linkage out of adjustment (the shifter linkage not the tv linkage) faulty forward clutch, pump feed circuit to the forward clutch,broken spring or damaged cage in the -way roller clutch.

Is this a recent install? Your other post wasn't really clear. If so, did you get the converter seated properly before installing the tranny?