keep my transmission fluid colder since the fluid cooler is attached to the radiator.

 

If you are concerned about trans fluid temp, take a look at an auxiliary cooler. The only way to keep your fluid cooler currently, is to keep the coolant cooler...... If that makes any sense. The thermostat has more to do with that than the fans.

 

Bought the trans temp gauge going to buy the auxiliary cooler next. Been wanting one just havent bought one. 180 t stat

 

the e-fan won't necessarily keep your trans fluid any cooler unless its moving a lot more air than the engine fan. its the same radiator with approximately the same amount of air moving across it.

put on the largest trans cooler you can find. silver did some testing awhile back with a trans temp gauge in place and demonstrated that the small coolers do very little.

pipe the trans fluid through your radiator first to cool it to 160-ish, and then through the aux cooler.

 

which is the intake line to the factory cooler?

 

i think these E-fans flow about 2500 cfm a piece. I've got 2.

 

not really I have 2 efans and run the tranny fluid through the rad into the stock cooler then into a aftermarket cooler and it still stays warm. Of course I have a higher TC so it makes my temps higher

 

where is there a good place to put the trans temp sensor for my gauge

 

the input line (pressure line) should be the bottom fitting on the radiator.
its also should also have the check valve at the end of the hard line at the frame, unless its been removed. its a fitting about 1 inch in diameter and about 1 or 1-1/2 inches long. if it hasn't been removed, you should remove it, since it accomplishes nothing and provides a place for the line to get clogged up.

if there's any doubt, disconnect the lines and place them in a bucket. have a helper start the truck and shift to neutral. fluid will pump out.

 

it was removed before I got the truck