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post #1 of 7 Old 10-20-2010, 04:58 PM Thread Starter
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Tranny temps

Ok I need some input on how to cool my tranny down. I do alot of running around in the mountains. And when I'm pulling steep long switchbacks my tranny heats up (200 to 210) and I have issues sometimes on the highway out here pulling steep long mountain passes. It cools back down on it's own once I get on flat or down hill but when it warms up like that reverse doesn't like to work real good (while it is hot). I"M NOT LOSING MY 35"s!! Is there an after market tranny cooler I can get that works good? And has anyone tried putting an electric fan on there obs to help cooling? Or has anyone tried adding a 2nd oem cooler to the existing cooler?

97 F350 stage 1 injectors, evolution edge, 4" diy intake, 3"down pipe, factory idle controller, 4" lift, 35" big o xt's, custom front end
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post #2 of 7 Old 10-20-2010, 05:23 PM
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you need to upgrade coolers. the stock one really sucks. i installed a dual core 13"x8" cooler from the parts house and it droped my trans temp by a bunch. i had bad trans temp problems a couple summers ago while hauling hay in 100+ degree temps. put the new cooler in and never looked back. you can even hook the stock one in series with the new one for even more cooling. never had to put a elec. fan on. I have 35s on my 2WD so your good with your tires.

1995 2WD F350 Powerstroke
2003 F250 7.3 8" lift
2007 F250 CC 4x4 lariat

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post #3 of 7 Old 10-20-2010, 05:28 PM Thread Starter
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how did you mount it? Just fab some new brackets?

97 F350 stage 1 injectors, evolution edge, 4" diy intake, 3"down pipe, factory idle controller, 4" lift, 35" big o xt's, custom front end
Mountain States Custom Metal Art


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post #4 of 7 Old 10-20-2010, 05:36 PM
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I took the old cooler out and its mount bracket. then i bought a cooler like this one
Advance Auto Parts: High Performance Transmission Oil Cooler by Imperial - Part 240516
i used the zip lock studs that came with the cooler. they go through the fins of the cooler and the radiator. they will keep the cooler held tight against the pads supplied with the kit. works really well.

1995 2WD F350 Powerstroke
2003 F250 7.3 8" lift
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post #5 of 7 Old 10-20-2010, 05:41 PM Thread Starter
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cool, so I take it the 2 brass fittings thread into the cooler and then you just hose clamped the rubber lines on the truck to them. Thanks I'm gonna do some shopping this week, before I have to bring my camper back from elk camp

97 F350 stage 1 injectors, evolution edge, 4" diy intake, 3"down pipe, factory idle controller, 4" lift, 35" big o xt's, custom front end
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post #6 of 7 Old 10-20-2010, 05:56 PM
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yep fittings on thread to cooler, hoses go on fittings. oh and make sure you check fluid while at idle after install it will be low because of the larger volume cooler. my buddy made this mistake and ended up hurting the trans instead of helping it.
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post #7 of 7 Old 10-20-2010, 08:34 PM
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I like this one. I use a ton of them.

http://www.dieselsite.com/index.asp?...ROD&ProdID=205
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