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They are on the west coast.
2016 Burb - New Built 6L80 and Circle D Converter going In Soon
- Thread starter usaf27
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- transmission
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Sub'd.
I have my local torque converter rebuild them...He does a few upgrades to his stock level builds which address all the shortcomings w/the factory converters. Unfortunately, he doesn't ship those out anymore as it's been a mess getting folks to ship cores back.
We heard back from Justin and we will be able to help out. We will give you a call to discuss.
Haha. Discussing this right now in my head.
mikeyss
Full Access Member
I recently had my 6L80 rebuilt to withstand my future procharger. The shop that built mine says that the torque converter slip has to be zero'd out and that lockup should be limited to 4-5-6 gear. They installed a triple disc converter and he wouldn't let me leave the shop without verifying that the TCM was properly tuned for the converter. Since I had a Blackbear tune even before my original trans blew up, I was pretty much good to go. I believe my stall is 2600-2800 and it drives completely normal, until I mash the gas pedal down!!
Thanks for the insights. Was your original trans all stock with a BB tune?
mikeyss
Full Access Member
Yeah it was the original trans, and it had been tuned by Blackbear. It lasted 180k, and I also had a circle d converter in the original trans, just a higher stall with that one. Unfortunately I couldn't reuse the circle d because the transmission pump blew up.
@mikeyss
That’s unfortunate. Did you happen to ever run that Circle D converter without a Black bear tune? If so, I’m curious if you had the same issue in having with the a slight shudder and converter not locking up when it should.
Thanks!
@BlackBearPerf
Autocal has been ordered.
Autocal has been ordered.
mikeyss
Full Access Member
I never read the circle d without Blackbear tune. My issue when the original trans blew is ALL of the fluid was pouring out of the bell housing area. There were symptoms before that happened though, like shift flares and mushy shifts. It also slipped in 5th gear at times, or it felt the converter couldn't keep the lockup applied.
Thank you! We will have your AutoCal shipped out on Monday. We look forward to working with you.
@BlackBearPerf
AutoCal received and tune files sent over to you. Hoping to get this driveable and seeing if the TCC improves!
Thanks!
AutoCal received and tune files sent over to you. Hoping to get this driveable and seeing if the TCC improves!
Thanks!
Glad it arrived safely and thank you! We have received your files.
Alright.
I didn’t want to leave this post without any conclusions. Last week I got a base tune from BBP. Which made big improvements. The shudders and TCC slip are almost nonexistent. It appears the more I drive the better it’s getting. So not sure if the transmission is still learning or what. However, I performed a Data Log and have sent that over. Waiting for BBP to analyze those logs and send me back my final tune.
So far so good and I am impressed with the BBP tune, even though it’s just a base tune to get vehicle drivable.
Thank you!! @BlackBearPerf
I didn’t want to leave this post without any conclusions. Last week I got a base tune from BBP. Which made big improvements. The shudders and TCC slip are almost nonexistent. It appears the more I drive the better it’s getting. So not sure if the transmission is still learning or what. However, I performed a Data Log and have sent that over. Waiting for BBP to analyze those logs and send me back my final tune.
So far so good and I am impressed with the BBP tune, even though it’s just a base tune to get vehicle drivable.
Thank you!! @BlackBearPerf
That is great to hear! We have received your log file and the tuner will be reviewing it as quickly as possible for you.
After 8,000 miles I conducted the first transmission service. I wanted to do it sooner but life wouldn’t let me. Lol.
Here’s some pictures of what the fluid looks like after 8,000 miles on the new rebuild. Looks pretty typical to me. I use the Penzoil LV multi-vehicle ATF Full synthetic fluid.
Here’s some pictures of what the fluid looks like after 8,000 miles on the new rebuild. Looks pretty typical to me. I use the Penzoil LV multi-vehicle ATF Full synthetic fluid.
Attachments
Here is the 25,000 mile mark. Trying to keep it clean 
The @BlackBearPerf tune has been great and it’s still shifting smooth!
The @BlackBearPerf tune has been great and it’s still shifting smooth!
