6l90 transmission - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

DiGiam · 02-16-2018, 02:05 PM

How smooth is the 6L90 transmission. I've got a 16 camaro ss and the A8 is the worst transmission GM has made and has given me nothing but trouble. I'm looking at 5th gen ZL1's but just wondering how the 6L90 is in daily driving. Once you modify the car does it still shift good or will it have issues. Just curious. Thanks in advance

rmcbee · 02-16-2018, 03:36 PM

Quote:

Originally Posted by DiGiam

How smooth is the 6L90 transmission. I've got a 16 camaro ss and the A8 is the worst transmission GM has made and has given me nothing but trouble. I'm looking at 5th gen ZL1's but just wondering how the 6L90 is in daily driving. Once you modify the car does it still shift good or will it have issues. Just curious. Thanks in advance

I've had my 2013 ZL1 for over two years with mods, cam, headers, etc., and been happy with it. This week I had a FTI 3600 stall put in and ID850 injectors and tune, and wow, i REALLY like it.

gmorris · 02-16-2018, 04:31 PM

If you or your tuner know what you're doing it is a great trans but a bad tune will trash it very quickly...and its a lot different than tuning a 4l80. Leave all or most of the torque management and make subtle time and pressure changes and it will take a lot of power.

DiGiam · 02-16-2018, 05:56 PM

How is it in part throttle daily driving. That's where the A8 that's in the 6th gen camaro is horrible. Harsh shifts and really jerky.

hammdo · 02-16-2018, 06:15 PM

I thought there was a TSB for the A8 — including the torque converter shutter during shifts.

May want to ck that first. Dealer should retune the trans under that...

-Don

DiGiam · 02-16-2018, 10:18 PM

I've had it flushed 3 times, converter changed, and reprogrammed. It's just inherent to the A8. They ever had us switch to the new Dexron HP fluid and that didn't help anything. It's just a pretty lackluster transmission. Looks like the 2019 with have the A10 which has proven to be a much better transmission.

hammdo · 02-16-2018, 10:56 PM

Wow, yep sounds like a dud...

Thanks for the info...

-Don

hammdo · 02-17-2018, 12:19 AM

One more option:

https://www.mobil.com/English-US/Pas...etic-LV-ATF-HP

For those hard cases — gm Recommends this now when Dexron HP fails

-Don

CalebTheCarNinja · 03-05-2021, 12:57 PM

So I am about to undergo and ZL1 6L90 transmission swap into a 2010 SS and I have decided to buy either a rebuilt or remanufactured transmission and upgrade the converter and leave it be since I don't plan on taking it to forced induction and it'll save money. I read this article https://transmissions-101.constantco...0-transmission on the standard 6l90 about remanufactured vs rebuilt transmissions, do ya'll think there is much of a difference? Also, what are some good torque converter options?

02-16-2018, 02:05 PM	#1
DiGiam Drives: 2016 NFG SS A8 Join Date: Jul 2014 Location: Valdosta Posts: 405	6l90 transmission How smooth is the 6L90 transmission. I've got a 16 camaro ss and the A8 is the worst transmission GM has made and has given me nothing but trouble. I'm looking at 5th gen ZL1's but just wondering how the 6L90 is in daily driving. Once you modify the car does it still shift good or will it have issues. Just curious. Thanks in advance __________________ 2016 NFG 1SS A8. Pray ported intake manifold, Rotofab dry cai, kooks 2" catted longtubes, E85,

02-16-2018, 04:31 PM	#3
gmorris Drives: 2015 ZL1, Red Hot A6 Join Date: Aug 2016 Location: Calgary Alberta Posts: 40	If you or your tuner know what you're doing it is a great trans but a bad tune will trash it very quickly...and its a lot different than tuning a 4l80. Leave all or most of the torque management and make subtle time and pressure changes and it will take a lot of power. __________________ 2015 Red Hot ZL1, Rotofab, Kooks LT's, 10" lower, ID850's, JMS BAP, BTR stage 3 torque cam, meth injection, self tuned with HPtuners 1969 Chevelle, 418 LS3, Ridetech suspension

02-16-2018, 05:56 PM	#4
DiGiam Drives: 2016 NFG SS A8 Join Date: Jul 2014 Location: Valdosta Posts: 405	How is it in part throttle daily driving. That's where the A8 that's in the 6th gen camaro is horrible. Harsh shifts and really jerky. __________________ 2016 NFG 1SS A8. Pray ported intake manifold, Rotofab dry cai, kooks 2" catted longtubes, E85,

02-16-2018, 06:15 PM	#5
hammdo 'It's an experiment' Drives: [COTW 2/09/15] '11 GPI LSA SC Z/LE Join Date: May 2014 Location: Dallas TX Posts: 8,693 View My Garage	I thought there was a TSB for the A8 — including the torque converter shutter during shifts. May want to ck that first. Dealer should retune the trans under that... -Don __________________ 747 RWHP 794 RWTQ "Horsepower sells cars, torque wins races." - Enzo Ferrari See My Build: http://www.camaro5.com/forums/showthread.php?t=385577

02-16-2018, 10:18 PM	#6
DiGiam Drives: 2016 NFG SS A8 Join Date: Jul 2014 Location: Valdosta Posts: 405	I've had it flushed 3 times, converter changed, and reprogrammed. It's just inherent to the A8. They ever had us switch to the new Dexron HP fluid and that didn't help anything. It's just a pretty lackluster transmission. Looks like the 2019 with have the A10 which has proven to be a much better transmission. __________________ 2016 NFG 1SS A8. Pray ported intake manifold, Rotofab dry cai, kooks 2" catted longtubes, E85,

02-16-2018, 10:56 PM	#7
hammdo 'It's an experiment' Drives: [COTW 2/09/15] '11 GPI LSA SC Z/LE Join Date: May 2014 Location: Dallas TX Posts: 8,693 View My Garage	Wow, yep sounds like a dud... Thanks for the info... -Don __________________ 747 RWHP 794 RWTQ "Horsepower sells cars, torque wins races." - Enzo Ferrari See My Build: http://www.camaro5.com/forums/showthread.php?t=385577

02-17-2018, 12:19 AM	#8
hammdo 'It's an experiment' Drives: [COTW 2/09/15] '11 GPI LSA SC Z/LE Join Date: May 2014 Location: Dallas TX Posts: 8,693 View My Garage	One more option: https://www.mobil.com/English-US/Pas...etic-LV-ATF-HP For those hard cases — gm Recommends this now when Dexron HP fails -Don __________________ 747 RWHP 794 RWTQ "Horsepower sells cars, torque wins races." - Enzo Ferrari See My Build: http://www.camaro5.com/forums/showthread.php?t=385577

03-05-2021, 12:57 PM	#9
CalebTheCarNinja Drives: Chevy Camaro SS Join Date: Feb 2021 Location: Tennessee Posts: 2	So I am about to undergo and ZL1 6L90 transmission swap into a 2010 SS and I have decided to buy either a rebuilt or remanufactured transmission and upgrade the converter and leave it be since I don't plan on taking it to forced induction and it'll save money. I read this article https://transmissions-101.constantco...0-transmission on the standard 6l90 about remanufactured vs rebuilt transmissions, do ya'll think there is much of a difference? Also, what are some good torque converter options?