6L90E tranny cooler lines.
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6L90E tranny cooler lines. 
Just looking for a defenitive answer on which port on the 2011 6L90E transmission is the pressure line so I can run it to the cooler in the radiator. Top or Bottom? Also do you know which port on this radiator is the pressure in or is it not directional? Thanks
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From: Ann Arbor, MI
I believe that the hot fluid comes out of a 6L80/6L90 at the top, but someone should confirm that.
The trans cooler integrated into a radiator is typically just a simple tube that runs through the radiator fluid. While the hot side probably should enter at the top (top line of 6L80 to top of radiator), as the bottom of the radiator tends to be cooler, it won't make much difference.
If you are running a higher stall converter or driving the car hard on any type of track, you really need a much larger aftermarket cooler.
The trans cooler integrated into a radiator is typically just a simple tube that runs through the radiator fluid. While the hot side probably should enter at the top (top line of 6L80 to top of radiator), as the bottom of the radiator tends to be cooler, it won't make much difference.
If you are running a higher stall converter or driving the car hard on any type of track, you really need a much larger aftermarket cooler.
