Transmission cooler. a wee bit larger then stock! - Diesel Bombers



Chevy/GMC Duramax 01-04 LB7 Discussion of Chevy and GMC Trucks with LB7 Duramax Turbo Diesel Engines

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Old 08-25-2012, 04:10 PM
Diesel Bomber
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Default Transmission cooler. a wee bit larger then stock!

so after patching a few transmission line leaks and springing another leak in the transmission cooler i thought it was time to replace them.

i lucked out a found one that was just the right size. if it was just 1/2 of an inch bigger then it wouldn't fit.

after running it for a week, i think i'll have to say: i like it.

on hot days of 100+ degrees in town driving the transmission temp gauge never gets above 150. in the morning when its around 70 out the gauge never moves up from cold. i am even seeing about a 20 degree drop in engine temps too at times.

so far i have not towed anything with it yet but have no reason to believe it will not keep up with the demand

anyways here are some photos

the cooler is 27 inches wide

and 18 inches tall

new hydraulic lines from mcmaster carr


Last edited by 2004LB7; 08-25-2012 at 04:13 PM.
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Old 08-25-2012, 05:05 PM
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good god almighty that thing is huge!!!

and those are some low *** temps too. during the summer drving through the city my trans will hit 200 sometimes. i also have a stage 4 too.
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Old 08-25-2012, 05:27 PM
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ya, my temps used to be around 200 all of the time. the best was about 180 on the freeway.

now is there such a thing as too cold? i wonder what winter will be like. might have to block some of it off
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Old 08-25-2012, 06:30 PM
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block it off

i need to add a bigger one, and an external oil cooler to the front too
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Old 08-25-2012, 08:49 PM
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What brand is it, or where did you get it? Looks good, I like it and want it
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Old 08-30-2012, 04:41 PM
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Yea that thing looks awesome! Those temps are really good too
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Old 08-30-2012, 05:51 PM
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Quote:
Originally Posted by Rick S View Post
What brand is it, or where did you get it? Looks good, I like it and want it
got mine on ebay for about $75

here is one that looks almost exactly like mine. same size too:
Setrab NASCAR road course 2 pass design aluminum oil cooler with AN-12 fittings | eBay

there are others that some of you adventurous one might get to work. just search ebay for "Nascar oil cooler"

the hydraulic hoses i got from McMaster Carr
McMaster-Carr

you will need some flair fittings. i removed the section of transmission line up to the nearest hard line and flared it to make the connection

good luck to who ever buys it first

Last edited by 2004LB7; 08-30-2012 at 05:54 PM.
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