Jump to content

Transmission Cooler Upgrade

elgavilan123
 Share

Recommended Posts

elgavilan123 Enthusiast

elgavilan123

Posted
Posted

After a long trip that included some very long steep grades in June pulling the new 14000# toy hauler with my 2017 Silverado 2500 HD 6.0 gas and seeing the trans temp reaching 228, I decided to upgrade the trans cooler. I did a lot of research and found that the stock Silverado Allison trans cooler is larger than the stock Silverado 6.0 gas trans cooler but will fit in the same location and only take up the same space. How can that be? You say? The stock gas trans cooler has a large empty space built into the mount and the Allison fills that space with more cooler tubes. The only issue is that the Allison version uses much larger cooler line fittings than the gas version. I converted mine to - AN fittings and lines and it is working great so far, running about 25 degrees cooler. Pics show the old cooler compared to the new diesel version and the line fittings. faa7042b2ad33b126bb32a9b841158bb.jpg2300e2e7947494ce8bf733b92e9e4e57.jpg510b2670a332af176a7e5b7cbca1499b.jpg

 

Sent from my LM-G820 using Tapatalk

 

 

  • Like 4
  • Thanks 1
dplarson Enthusiast

dplarson

Posted
Posted

Wait, doesn't the gas 6.0 have an Allison transmission?

I assume you're comparing gas to diesel trans coolers right? Because comparing Allison to gas doesn't make sense unless, and this is entirely possible, maybe I'm confused.

I might need to look over your shoulder for a parts list. I like this!

Sent from the demons in my head

davester Senior Enthusiast

davester

Posted
Posted

You're confused.  He just compared the trans oil coolers, not the transmissions themselves.  The 6.0 gas engine doesn't have the Allison transmission.

  • Like 1
dplarson Enthusiast

dplarson

Posted
Posted

Perfect, thanks guys.

Now for the parts list. I'll have to go investigate what it will take to make this happen on my 2017 6.0 2500HD Sierra Base.

Sent from the demons in my head

elgavilan123 Enthusiast

elgavilan123

Posted
  • Author
Posted

The diesel cooler is available online and on ebay for around $150 to $160. The diesel cooler fittings are 20mm setrab fittings and I could not find any thing that stepped it down to the smaller size other than going to - AN fittings. I found a 20mm male with a - 6 AN female and then a transmission line kit with the proper fittings for that. The online hose kit goes for about $160-$175 and includes the transmission fitting.

Sent from my LM-G820 using Tapatalk

  • Like 1
corn18 Enthusiast

corn18

Posted
Posted

Excellent upgrade.  How do you like the 6.0 + 14,00 lbs 5er combo?  I have a 2500HD w/ 6.0 and I'm looking at 5ers in that range.  Maybe a little lighter @ 12k lbs.

elgavilan123 Enthusiast

elgavilan123

Posted
  • Author
Posted
Excellent upgrade.  How do you like the 6.0 + 14,00 lbs 5er combo?  I have a 2500HD w/ 6.0 and I'm looking at 5ers in that range.  Maybe a little lighter @ 12k lbs.
It pulls the toy hauler fairly well, but my 6.0 has shortie headers, 3.5 to 4" magnaflow exhaust, cold air intake and a performance tune by Blackbear performance. On some of the really large hills it will drop into second gear and maintain 52 - 53 mph. The hills going into Payson and from Payson to the top of the rim are the worst. I have a Magnuson supercharger on the way that will add around 120 hp and torque. Mileage runs around 7 or 8 on flat ground running 65 - 67 mph.

Sent from my LM-G820 using Tapatalk

corn18 Enthusiast

corn18

Posted
Posted
On 7/15/2020 at 6:31 PM, elgavilan123 said:

It pulls the toy hauler fairly well, but my 6.0 has shortie headers, 3.5 to 4" magnaflow exhaust, cold air intake and a performance tune by Blackbear performance. On some of the really large hills it will drop into second gear and maintain 52 - 53 mph. The hills going into Payson and from Payson to the top of the rim are the worst. I have a Magnuson supercharger on the way that will add around 120 hp and torque. Mileage runs around 7 or 8 on flat ground running 65 - 67 mph.

Sent from my LM-G820 using Tapatalk
 

Holy crap!  That 6.0 will be a beast with that Magnuson.  I think I would rather have an oil burner for that much money, but it would not be the same as your 6.0 with a Manguson.  Let us know how you like it.  I looked at the install .pdf and it looks fairly straight forward.

cmysstailights Enthusiast

cmysstailights

Posted
Posted

Nice you just answered part of my other question i posted about 5th wheel towing big. Im looking to do long tubes and update tune from.blackbear, but cant find the long tubes anywhere

Sent from my SM-G960U using Tapatalk

elgavilan123 Enthusiast

elgavilan123

Posted
  • Author
Posted

I saw an advertisement for long tubes for the late model silverado a day or two ago, American Racing maybe? They were expensive but included the y-pipe and cats if you want them. I'll see if I can find it.

Sent from my LM-G820 using Tapatalk

2016HD Enthusiast

2016HD

Posted
Posted

Nice factory option. But kinda pricey considering you could have gone with a much better aftermarket cooler for less $$.  On a side note? How do you find the difference with the Tune?? Any power gains and mileage when not towing? Thanks. Nice work though. Any link to the hose kit you found. 

 

elgavilan123 Enthusiast

elgavilan123

Posted
  • Author
Posted
Nice factory option. But kinda pricey considering you could have gone with a much better aftermarket cooler for less $$.  On a side note? How do you find the difference with the Tune?? Any power gains and mileage when not towing? Thanks. Nice work though. Any link to the hose kit you found. 
 
I made my own hose kit using a local agriculture /hot rod hydraulic shop here in Yuma, only cost me $70 for the fittings and 15' of reinforced heat rated AN - 6 hose. I also thought about using an aftermarket cooler but they are more expensive and don't fit the spot for mounting where they get the most air flow.

Sent from my LM-G820 using Tapatalk

elgavilan123 Enthusiast

elgavilan123

Posted
  • Author
Posted

I like the tune from Black Bear, much more responsive, a little better gas mileage and more power. With most other aftermarket tuners you have to switch tunes to tow from the performance or mileage tune but the Blackbear tune is one tune for everything. I know that means there are a few compromises to accommodate that but I like the install it and forget it application.

Sent from my LM-G820 using Tapatalk

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • asilverblazer
      Intermittent no-code issues on 2022.5+ V8 trucks — what did the shop fail to capture?

      By asilverblazer · Posted

      Length/amount of data capture will be important to consider, sifting through 5 minutes of a data log can be enormous when it is stored in milliseconds. Being able to find the 'event' let alone decipher it.   Presumably the driver would notice something and hit a button to capture the 'window' of data. That window has to be large enough for the operator to recognize the event and react accordingly.    The data has to be able to be retrieved easily.   The data has to be able to be understood. Which is the biggest challenge, dealer techs won't even know what most of it is and would likely not even look at it if an owner brought it to them. Meaning the owner, the least educated/qualified, trying to understand it.    How will the data be presented? Could specific PIDs be selected and a timelapse graph be watched? How will a specific value be noted as abnormal? Additionally, a good data logger would be able to 'learn' normal values for a specific vehicle and flag abnormalities automatically. It could in theory watch parameters degrade over time and suggest maintenance as needed. (If the MAF reading begins tapering off for a given set of other readings - MAP, throttle position, Ambient, etc.. a flag to check air filter.) With the amount of data available, a device (really the vehicle rather than an additional accessory) should be able to do more than issue a DTC. It should be able to run the full diagnostic suite automatically and present a solution rather than a code. (It's not the 90's anymore). The technology is available for the vehicle to not just say "P0087", it should know low fuel pressure, check other PIDs to narrow down the problem itself, and determine if it is a lift pump, high pressure pump, regulator, leak in the fuel line, clogged filter, etc. Even if it can't narrow it down, it should be able to guide the user to the likely problems.   This would be a major problem for dealer service departments, which are the manufacturers customers it is in their collective best interest to NOT have this available to the consumer.   Further, if the owner is going to be the primary consumer of the data, it's got to be at a consumer price point vs. dealer only specialty tool price.   This group is more 'involved' in their vehicle than general public/consumer and will have knowledge, experience, needs and desires that are quite different from the market at large.   
    • KARNUT
      OCI, not when but why?

      By KARNUT · Posted

      I put the prof up. If you read what I posted. You can see that housing, cars and income are in line with the era we were talking about. It’s harder in some places easier in others. Let’s agree to disagree and put this back on track, OK? We both are pretty stubborn and hard headed. But I bring receipts. If you wish I will not respond to you in the future. 
    • Grumpy Bear
      OCI, not when but why?

      By Grumpy Bear · Posted

      Lets see if I can sum up two pages of nothing useful.    You want to refute your own governments data of the "Purchasing Power" Index FOR THE ENTIRE USA and its territories replacing it with the experience of a single family and its business and label that reality?  Then pound on that for a week hoping it will find traction?    Stan, I've told you several times. I don't do irrational. There are more people in the USA than your family.    I'm pretty sure this tread is so blown up. I'll give you a few days or months if need be to post yourself silent then I'll see if I can find enough parts of the train to reassemble it. 
    • asilverblazer
      VSE CCV Bypass - Anyone have this installed in their L5P?

      By asilverblazer · Posted

      Facebook groups hate VSE, poor customer service; their responses to criticisms are pretty poor for a reputable company. I'm not a customer, haven't bought anything from them, but how they handle themselves on social media is a definite "No" for me. 
    • asilverblazer
      Transmission Woes :-(

      By asilverblazer · Posted

      $10,000 for a transmission?   Pretty sure I could buy all the parts, tools, and education to rebuild it myself for a quarter of that amount.   or swap it out with a new one...

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...