LLY: What is the perfect trans TEMP??

rdohara

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Jun 17, 2009
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Just trying to find out in a perfect world what would be the best temp for the trans to run at all the time?
 

maine04max

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Dec 11, 2008
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is it bad if it runs a good amount less than that Mike? mine always seems to be between 125 and 150
 

Brian1

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Jan 1, 2008
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It can depend on where you live. Mine when stock was around 150 and outside temp 90. Suncoast build put me up to 185degrees running 75mph and air temp of 75. But put on nearly 1000 mile and may be running more cooler. Will know tomorrow. run to Chicago tomorrow and see what 75mph does.

Brian
 

Mike L.

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Aug 12, 2006
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is it bad if it runs a good amount less than that Mike? mine always seems to be between 125 and 150
Not at all.
The question I believe was optimum temps so first thing I thought of is racing along with everything else. I think a racing trans would be best served at 175F and would be close to being optimum for everything else. My Alli stays at 150/180 all the time. The only time I would demand 175 would be for racing.
 

duratothemax

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Aug 28, 2006
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~100* over ambient is a good general rule for trans fluid temp in my own opinion...

at least thats what mine has always run and it has over 100,000 miles on it of 550+ rwhp since I built it 4 years ago.

ben
 

Brian1

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Jan 1, 2008
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Well after todays drive to Chicago and outside temp Allison stayed a nice cool 145degrees today.

Brian
 

Cougar281

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Sep 11, 2006
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St Louis, MO
~100* over ambient is a good general rule for trans fluid temp in my own opinion...

at least thats what mine has always run and it has over 100,000 miles on it of 550+ rwhp since I built it 4 years ago.

ben

That's where mine sits all the time as well, except for the occasion when I'm in traffic and not being nice, then it'll go a bit higher, but that's not often. As long as it's around that area, I don't worry much. The main problem with high fluid temps is fluid breakdown, which is less of an issue if you're using a full synthetic such as Transynd.
 
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