Bought this for my 47re and ended up buying a 48re.
they cost $700 new + $300 for core
Selling for $600 + shipping no core needed
also comes with stronger shift lever, front servo spring
From there website
"The lube circuit of the valve body is modified such that there is always line pressure feeding the lube circuit. With the factory valve body, when the transmission gets hot, you may lose oil to the lube circuit while decelerating downhill if the engine is at low rpm or idle. With our upgraded valve body this will not happen.
Our valve body has increased pressures starting at 60-75 psi at idle and up to 150-175 psi at wide open throttle. A factory valve body has pressures of 50-60 psi at idle and 85-95 psi at wide open throttle.
This valve body is capable of lockup in 2nd through 4th or optionally, all forward gears. If 1st through 4th lockup is desired a toggle switch can be added at no extra charge. A manual lockup switch is used with an exhaust brake
or to keep transmission temperatures down while towing uphill.
The new valve body comes complete with solenoids. The governor pressure solenoid and governor pressure sensor are new factory Dodge parts.
When using a new valve body a stronger 1-2 shift lever is also recommended. The higher pressures may break the stock lever. "