6L80E Transmission Assembly

In this video I will be covering the assemblies of my builds of the stock 6L80-6L90 transmissions. I will not be covering clutch clearance checking and modifications along with endplay measurements and adjustments, nor vacuum testing. I will post all of that information in another video.

Part numbers used in the video:

Sonnax 1234 Billet Piston : 104984-01
Sonnax Bushing Kit: 104030A-01K
Sonnax Heavy Duty 456 Piston Kit: 1046960-01K
Sonnax ZipKit : 6L45-6L90-ZIP
Dynamic Billet Converter: DYDGM128-B
Superior Solutions Shim Kit : K0146

Clutch clearance specifications:

1-2-3-4 : 6L80 : 0.060"-.078", 6L90 : 0.070"-0.089"
3-5-R : 6L80 : 0.048"-0.700", 6L90: 0.059"-0.082"
2-6 : Recommended 0.074"-0.079" (No Specification)
4-5-6 : 0.045"-0.075"
Low & Reverse : 0.050" (No Specification)
Total endplay recommendation is 0.012"-0.015"

Check out these links to the supported vendors and manufactures:

[brucewest]

Your videos are clear & precise. Thanks for calling the rubber seals what they really are. an o-ring is not a lip seal or a d-ring like I’ve heard some other builders say big difference. Thanks for making it clear.
“Good content “

[familyguy]

Fan-friggin-tastic video. You are truly an awesome guy for doing this!

[tylercovell]

This is outstanding, I hope this video gets millions of views! Happy Holidays sir! Thank you for this one for sure 👍🏻

[markabercrombie]

You are amazing men and I am proud to be able to watch your videos

[dalethomas]

Good stuff! Im diving into my first 6l80 this week for my personal truck. Been through plenty 4l60 variations, 4l80s, th400s, and power glides so I have some confidence but this is like taking an open book test having a video this detailed. Thanks.

[mitchellhahn]

Glad you put this video out! Super helpful!

[wilber.]

Love your videos here & across social media, merry christmas brother & happy new years. :)

[PaulysAuto]

Amazing video thank you for making it. Truly an art.

[hellboygrim]

Can you give a description of all the parts you used in the rebuild it would be super useful to go along with the video man! Good work though!

[houshang]

Thanks, Great video, I am dealing with 6L90 and It does not go forward and no reverse, we open it up and 456 clutch are toasted, I have 2 question, do we need to replace new torque convertor, also why there is no movement situation on this type of transmissions?, I could not find any video on youtube regarding to test torque convertor when it is not installed on the car.

[albertorodeos]

excellent video why many mechanics need to press the stator on your video just drop like butter

[jtcausa]

Wish you had one of these vids for a 6r80

[MrJwat]

How do you feel about reaming the afl valve vs the drop in Valve???

[roberttownsend]

Holy crap, how big are those snap ring plyers 😅

[brianmiller]

I have made so many of these cases and the 10 speeds

[robbypatterson]

Where did you get the press tool for pistons? We have a hydro press at kut shop. Its a pain to adjust for different housings

[felixlopez]

great video. what brand of converter do you use for the 6l80?

[GrandPitoVic]

Have you ever seen a 2015 6L90 melt the rear center support piston and ooze melted plastic all over the rearclutcged and lock the trans up?

[josephbrutonjr]

I have a 2011 6l80 that has shift solenoid A stuck on, causing no forward or reverse. Is this something you see a lot of? And where do you send your techms to be refurbished?

[robertrogers]

Great video. My 6l80e just did something recently after being rebuilt. When it's in park I can hear noise and when it's in gear it goes away. Then when backing up it kind of goes clunk like it's popping out would you have any idea where I should start looking?