thats awesome! Hope everything is well and reliable for you. I’ve heard of some guys having to take their first rebuilt trans back apart 5-6 different times to fix mistakes(yikes).

im rebuilding the 6l80 in my 08 currently. Parts alone are $3700. What shocked me is how clean you have to be with everything. I had to rebuild two drums two different times because a single tiny hair got between the molded piston seal and the drum and leaked air.

it’s also really hard to clean the metal shavings out of the aluminum and the hard parts. The case was the hardest for me. The only thing that ended up working was ZEP industrial purple non diluted in a spray bottle. Soak the whole thing for 3-5 minutes and scrub with a toilet brush. Then rinse THOROUGHLY(zero will eat the aluminum if any is left on it) then hose it down really well with a couple cans of brake clean and liberally coat in wd40.

there’s really only 6 main assembly’s in the 6l that you pull out. 1234/35r drum, 456 drum, center support, output gear set, pump, and valve body. Then you rebuild those parts one at a time.

im almost done. Just have some bushing issues to sort out. Threw a sonnax kit with extra clutch in the 456 and the 35r and removed the waves. Also a zip kit for the valve body and pressure switch clean and rebuild.

 

It sounds like a coincidence. Regretfully, my first thought sounds like 3/4 gears have been lost due to transmission failure. How many miles does the vehicle have ?

Here is a link to a prior post. This will get you started. Shoot me a dm.
Trans part list post

list isnt 100% but deff save you hours of research.

I can give you my # if you want to hop on a call can give you an idea on what your getting into.

 

i double this. Nick super cool guy. Transmission bench has a great video on rebuild process. I would order each piece individually.

 

thx max, funny enough i forgot to put the oil in it when i put it on lol, put it in and was good. have driven 13 hours straight trans has never gotten hotter than 110 degrees this winter. Tru cool cooler Wild. Black bear tuned worked out great. Gl on the rebuild 6l80 sounds super interesting. Will watch a rebuild on that trans soon. Im guessing ill prob get 150,000-200,000 miles before trans go again. Maybe more?

 

Do you happen to know if these 4L65E's already have the Corvette Servo in them"

 

I just pulled the cover and found it already had one in there either original or not.

 

Corvette Servo is an upgrade. Likely, if that ls what your seeing the trans was rebuilt or someone installed it. May get lucky and see a date sticker on the torque converter. May indicate when rebuild accrued. Also check your carfax. Can get one .99 on etsy. May indicate what date and shop did rebuild. GL

 

There will always be a servo on the side. It’s the sizes of the servi that increase the power band. Hold more fluid.

 

Previous Owner did mention the trans was rebuilt but did not provide any paperwork about it. this would be the first thing i have found to back it up. will try the Carfax info also, thanks for the tip! Thanks.