Built 6l80 or 6l90? - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

JMI · 12-24-2015, 11:31 AM

Those of you that did the 6L80 to 6L90 swap.Did you reflash the TCM to match the 6L90 or kept running the 6L80 tune ?

CobraR · 12-24-2015, 11:51 AM

Quote:

Originally Posted by amerimuscle

CobraR, what did you run you all together w core charge?

I work for a Chevrolet dealer, so pricing wasn't that bad for me. I would have to look, but I think it was 3500 ish my cost.

CobraR · 12-24-2015, 11:53 AM

Quote:

Originally Posted by JMI

Those of you that did the 6L80 to 6L90 swap.Did you reflash the TCM to match the 6L90 or kept running the 6L80 tune ?

with my 2010 I had to swap the TCM out of the 6L80 to the 90, ECM did not want to play nice with the new TCM. Had the car and trans tuned after the swap.

JMI · 12-24-2015, 12:02 PM

Ok. Because some say it will work with the 6L80 tune and some don't. Might depend on the year of the tranny and the year of the Camaro.Some said the the TCM needs to be reflashed from GM to match the tranny.Example if we use a 6L90 off a 13 ZL1,the TCM would need to be reflashed with the 13 ZL1 software.
I got 2 6L90's here,and I was thinking of doing the swap from my 6L80 to 6L90 this winter.

CobraR · 12-24-2015, 12:53 PM

I attempted to program the TCM to a 12 ZL1, the ECM had a fit with it. I attempted to reprogram it to a 2010 Camaro SS, but would not load the older OS. So then I swapped the entire valve body and TCM assembly. Even though the valve bodies look identical, they are not. So back apart it came and used the 6L80 TCM and bolted that to the 6L90 valve body and everything worked great. Tuner had no issue with tuning the trans.

Honestly though, I almost wish I went 4L80E, because now I have been contemplating putting together a new setup and go for the 1200hp range, which I am not so sure the 90 will like.

Unavowed · 12-24-2015, 06:27 PM

Quote:

Originally Posted by JMI

I got 2 6L90's here,and I was thinking of doing the swap from my 6L80 to 6L90 this winter.

Want to sell the other one?

JMI · 12-25-2015, 07:59 AM

Quote:

Originally Posted by Unavowed

Want to sell the other one?

Not right now anyways.

vortechc5@A2B Motorsport · 01-04-2016, 10:14 PM

I have heard the 6l90 needs no work to handle to 800 rwhp. I really want to do this swap for my 6 speed manual when I figure out what's all involved.

Unreal · 01-05-2016, 08:05 AM

Quote:

Originally Posted by vortechc5@A2B Motorsport

I have heard the 6l90 needs no work to handle to 800 rwhp. I really want to do this swap for my 6 speed manual when I figure out what's all involved.

Lots of locals have done it. Easy way to handle 800rwhp. zl1 6l90, crossmember, and driveshaft (can use zl1, custom, or have stock one shortened. Then it is just ecu/tcu programming.

mrvenicess · 01-08-2016, 10:47 AM

Does anyone know if its true that you can only buy a remanufactured 6L90? I bought one and it is crap. I wanted a brand new trans but got a rebuild. Chev said that's all I can buy.

Unreal · 01-08-2016, 10:57 AM

Never heard of that. Last one a friend bought was brand new.

And if I did anything, it would be a 4l80 swap. I wouldn't mess with either of these unless you end goal was only ~700hp.

CobraR · 01-08-2016, 11:18 AM

Quote:

Originally Posted by mrvenicess

Does anyone know if its true that you can only buy a remanufactured 6L90? I bought one and it is crap. I wanted a brand new trans but got a rebuild. Chev said that's all I can buy.

was the trans crap or was the tuning crap?

mrvenicess · 01-09-2016, 11:02 AM

Car went 50,000 miles on the original trans until the clutches went,GM rebuild trans on the same tune was crap from the start. Does anyone have a part # for a brand new 6L90?

CobraR · 01-10-2016, 11:00 AM

My 6L90 did not feel the same as my 6L80 on the same tune. Had to have the trans retuned. The shifts were softer and slower. The 6L90 has different clutch packs and the tuning is different on the shift times.

12-24-2015, 11:31 AM	#15
JMI Drives: Red Jewel Camaro SS Join Date: Mar 2014 Location: East Coast Posts: 392	Those of you that did the 6L80 to 6L90 swap.Did you reflash the TCM to match the 6L90 or kept running the 6L80 tune ? __________________ BTR LSX388,AGP Twin Turbo.6L90,GM 9.9" Diff.Fore Innovations Level 4 fuel system.Great fuel economy !!!! 1xxx RWHP

12-24-2015, 12:02 PM	#18
JMI Drives: Red Jewel Camaro SS Join Date: Mar 2014 Location: East Coast Posts: 392	Ok. Because some say it will work with the 6L80 tune and some don't. Might depend on the year of the tranny and the year of the Camaro.Some said the the TCM needs to be reflashed from GM to match the tranny.Example if we use a 6L90 off a 13 ZL1,the TCM would need to be reflashed with the 13 ZL1 software. I got 2 6L90's here,and I was thinking of doing the swap from my 6L80 to 6L90 this winter. __________________ BTR LSX388,AGP Twin Turbo.6L90,GM 9.9" Diff.Fore Innovations Level 4 fuel system.Great fuel economy !!!! 1xxx RWHP

01-08-2016, 10:57 AM	#25
Unreal Drives: 2006 Z06 Join Date: Oct 2010 Location: Gilbert, AZ Posts: 5,712	Never heard of that. Last one a friend bought was brand new. And if I did anything, it would be a 4l80 swap. I wouldn't mess with either of these unless you end goal was only ~700hp. __________________ Nick Corvette Z06 -1200ish rwhp

12-24-2015, 12:53 PM	#19
CobraR Drives: 2010 2SS Join Date: Nov 2013 Location: Baltimore Posts: 124	I attempted to program the TCM to a 12 ZL1, the ECM had a fit with it. I attempted to reprogram it to a 2010 Camaro SS, but would not load the older OS. So then I swapped the entire valve body and TCM assembly. Even though the valve bodies look identical, they are not. So back apart it came and used the 6L80 TCM and bolted that to the 6L90 valve body and everything worked great. Tuner had no issue with tuning the trans. Honestly though, I almost wish I went 4L80E, because now I have been contemplating putting together a new setup and go for the 1200hp range, which I am not so sure the 90 will like.

01-04-2016, 10:14 PM	#22
vortechc5@A2B Motorsport Account Suspended Drives: 2015 1LE Join Date: May 2015 Location: waterloo Posts: 293	I have heard the 6l90 needs no work to handle to 800 rwhp. I really want to do this swap for my 6 speed manual when I figure out what's all involved.

01-08-2016, 10:47 AM	#24
mrvenicess Drives: 2013 CRT ZL1 auto Join Date: May 2010 Location: Venice Fl Posts: 1,443 View My Garage	Does anyone know if its true that you can only buy a remanufactured 6L90? I bought one and it is crap. I wanted a brand new trans but got a rebuild. Chev said that's all I can buy.

01-09-2016, 11:02 AM	#27
mrvenicess Drives: 2013 CRT ZL1 auto Join Date: May 2010 Location: Venice Fl Posts: 1,443 View My Garage	Car went 50,000 miles on the original trans until the clutches went,GM rebuild trans on the same tune was crap from the start. Does anyone have a part # for a brand new 6L90?

01-10-2016, 11:00 AM	#28
CobraR Drives: 2010 2SS Join Date: Nov 2013 Location: Baltimore Posts: 124	My 6L90 did not feel the same as my 6L80 on the same tune. Had to have the trans retuned. The shifts were softer and slower. The 6L90 has different clutch packs and the tuning is different on the shift times.