46rh valvebody
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im my situation yes, i turned the pump up a little and the torque convertor took a dump. When i rebuilt the tranny i decided to beef the internals, and install a shift kit. now ever since ive done this the truck has to sit 20 min running in neutral to prime the system up before i have any forward movement. once it primes up runs good and shifts good. before it idles when i check the fluid its like its 2 gallons over full, after its run a while its the perfect level. i also removed the check valve outta the line. so after reading and researching if the check valve is removed and the valve body drilled it creates almost a siphoning effect causing the fluid to drain back into the tranny and outta the coolers and torque convertor. its worse in my case before i have an extra cooler that holds about an additional 4 qts. i installed a hydraulic check valve hoping to remedy the excessive draining but it was no good so i guess i gotta put a valve body in it and hope the regulator valve seals goodand stops drainback. i dont think it matters if its a gas or diesel valvebody