Sonnax 6L80/90 Torque Converter Heavy-Duty Builds Explained

If you're interested in upgrading the torque converter in a GM 6L80 or 6L90 transmission, watch this video. You'll learn about the critical weak points of the stock-size, 300mm units and the difference between performance and heavy-duty converter upgrades. To understand options for good/better/best builds, you'll get a closeup look at key components like the front cover, piston and clutch plates, plus unique features of Sonnax multi-plate performance converter kits - the ultimate way to maximize reliability in JMBX, JMBV, JMDZ and JMDY coded units.
For a quick overview of build options, check out this guide: www.sonnax.com/tech_resources...

[@richardteresacricheducatio3542]

Really enjoyed the videos. Learned a lot of information. Thanks a lot.

[@sonnax]

So glad to hear that, thanks so much for the wonderful feedback!

[@LSMykie]

I can’t wait to build a 1000hp 6l80e I’ve already found all of the sonnax part numbers that I will need. ❤❤#lovesonnax

[@sonnax]

Glad to hear it! Thanks so much for your support, and let us know how everything goes.

[@LSMykie]

@@sonnax will do!! I also pre ordered my 4L60e gm054-HD valve body 6months ago through summit and it’s expected to ship 1-7-24. I’ve been anticipating it’s delivery

[@bigpatsunderthehood5552]

Thanks for the advice and information

[@bigpatsunderthehood5552]

Great job and much needed support and information

[@weldean46]

nice upgrades for the 6l units god knows they need it, hello from the great northwest

[@sonnax]

Thank you for your comment, and hello to you, too!

[@tangleass]

Love your videos. What would you recommend for a 2500 silverado with a 6.6l gas engine meant for towing?

[@sonnax]

Glad to hear that! Our product support team would be happy to help you. They can be reached directly via email at [e-mail], or phone at [phone] ext. 398. Thank you!

[@truckingjamaicans5045]

Hey do you guys work on lexus transmission? For example like from 2006 to 2012 like the a960e n the aa80e?

[@sonnax]

No, as we are not transmission rebuilders. We design and manufacture top-of-the-line parts for transmissions, torque converters, and drivelines. Feel free to visit our website to learn more: www.sonnax.com. You can see what's available for the A960E here: www.sonnax.com/units/25-a960e. Hope that helps. Thanks for reaching out, and have a great day!

[@marekkrepa9982]

My mechanic after torque converter changed to billet one said no programming needed. Is he right or should I deal with other shop. 2017 sierra with 6l80

[@sonnax]

Our product support team would be happy to help you. They can be reached directly via email at [e-mail], or phone at [phone] ext. 398. Thanks for reaching out!

[@justinalger9325]

Would the front cover upgrade fix the issues with a 2020 Silverado that has torque converter shudder and stuff?

[@sonnax]

Our product support team would be happy to help you. They can be reached directly via email at [e-mail], or phone at [phone] ext. 398. Thanks for reaching out!

[@DR-um2bv]

How can i just buy it all ready to go

[@sonnax]

We don't offer complete torque converters, we design and manufacture top-of-the-line parts for them. Feel free to reach out to our product support team with any questions. They can be reached directly via email at [e-mail], or phone at [phone] ext. 398. Thanks for reaching out!

[@Steven-gv1ke]

​@@sonnax that's a mistake... Just saying.

[@rafaelitogoty5741]

Hi I need 1 my ford 150 3v 2004,,,,I need info ,,,❓

[@sonnax]

Our product support team would be happy to help you. They can be reached directly via email at [e-mail], or phone at [phone] ext. 398. Thanks for reaching out!

[@brianross4057]

The Modified with lots of Sonnax parts 4l60e I have behind my LS1 has a 300mm 3 Pad converter TAG: TMBX 2420-6642, would it be compatable with what your showing here, I need a heavy duty low stall TQ for my 4x4.

[@sonnax]

The converter kits and modifications in the video only work for 6L80 and 6L90 units. The 300mm converters in the 4L60E’s don’t suffer from the same converter failures that the 300mm units see in the 6L units. For your 4L60E application, a converter builder should be able to set you up with a low stall 300mm TMBX style converter with a forged cover. The Sonnax part number for a forged cover for a TMBX converter is GM-CC-17: www.sonnax.com/parts/4589-front-cover. Hope this helps, and thanks for reaching out!

[@brianross4057]

@@sonnax Thank you so much for replying to my question, The LS1 4l60e in question is out of a 2004 Australian Holden Commodore and fitted to a 94 Toyota Hilux LN106 using an adapter kit mating the 4l60e to the Toyota transfer case, The Hilux is setup with a Touring Canopy and loaded up for extended living in the outback and weighs in at around 2400kg / 5300lb travelling in some very hot and rugged conditions that puts a lot of stress on the transmission and converter so a recoed one is on the list to be done. Cheers from downunder.

[@hatetheplayerhatethegame1932]

A nice upgrade would be a Drain Plug, to aid us from wasting so money and atf on trans fluid flushing.