hey Danny don't get mad with me jumping ahead of you here, but I got a OP on the 400 I need to get on the table. you don't wont it to be the pressure valve anyway big daddy, because that's in the front pump, what's happening in the Trans is,the pump is pumping the fluid through the conv. and the rad. cooling lines, but when it gets back to the pan from the rad. the pump cant (for some reason) suck the fluid out of the pan back into the valve body and clutch packs. the only reason that I can think of would be the filter is stopped up, setting on the bottom of the pan or a piece of gasket or something have gotten in the valve body filter pick up tube. check the filter and be sure its open all the way into the valve body, or maybe the valve body gasket is covering the hole. I believe that's where you problem is. ive screwed up about everything you can screw up putting kits in trans. but i belive you got one on me here big daddy.