How much rwhp and rwtq can a L99 engine handle? - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

UNRIVALED SS · 05-15-2017, 06:53 AM

Since we have already highjacked this guys thread here.

What are the considerations for the 6L90 swap? I know it's a couple inches longer and I think the bell housing has a hump on it?
Fill us in a couple key details. The 6L80s are a struggle for anything over 630.
I have seen enough to you AGP guys know your stuff. I'm no turbo fan but you guys know what you're talking about.

Unavowed · 05-15-2017, 12:26 PM

Since the housing is longer, you need a shorter driveshaft. DSS can build that, but adds to cost. Then, since you're in there, time to do a converter if you haven't already. Then at that point you may as well do the rear and axles too. I'm currently collecting info and dollars to do it all at one time.

UNRIVALED SS · 05-16-2017, 05:40 AM

I have heard that the top of the 6L90 case hits the trans tunnel. Don't know for sure if it's true. I would want to know before I got into it.

AGP Turbo · 05-16-2017, 03:42 PM

Do not use a truck 6L90, it has a totally different tail section. You need an actual ZL1 trans and cross member. Have the front section of your driveshaft shortened 1.4"
Do a Write Entire on the TCM with HPTuners to put your tune file in the trans. The dealership doesn't have to flash anything.
Done.

The 6L90 fits exactly the same as 6L80 other than being 1.4" longer.

jrylb73 · 05-20-2017, 12:28 AM

Well I am running 773 RWHP with a D1SC, cam, Meth, heads, intake mid, and a few other mods. My trans lasted like two days. Had it rebuilt by GPI and then had my Circle D Converter re-stalled from A 4C to a 2C. No issues so far Ran a 10.14 with it spinning hard coming out of the hole.

UNRIVALED SS · 05-20-2017, 03:21 AM

As usual these AGP guys know their stuff. 6L90 it is. You know what they say. The devil is in the details. 1.4 inches is the number I need.

John_C · 12-16-2018, 04:51 AM

Anyone know where to buy the ZL1 6L90E and how much they cost?

About to do a D1X stage II myself....

jrylb73 how much boost are you running?

bayarea408 · 12-17-2018, 03:57 PM

Quote:

Originally Posted by John_C

Anyone know where to buy the ZL1 6L90E and how much they cost?

About to do a D1X stage II myself....

jrylb73 how much boost are you running?

there is a mildy wrecked red 14 Zl1 auto thats being pieced out on ebay. They are parting out the drive train. Auto trans listing is still up.

05-15-2017, 06:53 AM	#15
UNRIVALED SS Drives: 2010 Camaro SS Join Date: Aug 2010 Location: El Paso Posts: 704 View My Garage	6L90 Since we have already highjacked this guys thread here. What are the considerations for the 6L90 swap? I know it's a couple inches longer and I think the bell housing has a hump on it? Fill us in a couple key details. The 6L80s are a struggle for anything over 630. I have seen enough to you AGP guys know your stuff. I'm no turbo fan but you guys know what you're talking about.

05-15-2017, 12:26 PM	#16
Unavowed Drives: Twin turbo G8 GXP Join Date: Dec 2012 Location: MD Posts: 454	Since the housing is longer, you need a shorter driveshaft. DSS can build that, but adds to cost. Then, since you're in there, time to do a converter if you haven't already. Then at that point you may as well do the rear and axles too. I'm currently collecting info and dollars to do it all at one time. __________________ 9.88 @ 144 https://youtu.be/nN0rz1RAcJw

05-16-2017, 05:40 AM	#17
UNRIVALED SS Drives: 2010 Camaro SS Join Date: Aug 2010 Location: El Paso Posts: 704 View My Garage	6L90 swap I have heard that the top of the 6L90 case hits the trans tunnel. Don't know for sure if it's true. I would want to know before I got into it.

05-20-2017, 12:28 AM	#19
jrylb73 Drives: 2014 Chevy Camaro 2SS Join Date: Jan 2015 Location: Derby, KS Posts: 49	Well I am running 773 RWHP with a D1SC, cam, Meth, heads, intake mid, and a few other mods. My trans lasted like two days. Had it rebuilt by GPI and then had my Circle D Converter re-stalled from A 4C to a 2C. No issues so far Ran a 10.14 with it spinning hard coming out of the hole. __________________ 2014 2SS/RS, L99 Procharged (D1SC) on Meth, ZL1 Fuel Pump, 85 lbs Injectors,Vitesse Throttle Controller, Bo White Ported TB, Kooks LT Headers, Stainless Works exhaust, GPI SS3 Cam, GPI Heads, GPI Intake Mods, Circle D triple Disk 2C Converter, DSS Carbon Fiber D/S, G Force Outlaw Axles and tuned by Ryan Stevens at GPI 774/697

05-20-2017, 03:21 AM	#20
UNRIVALED SS Drives: 2010 Camaro SS Join Date: Aug 2010 Location: El Paso Posts: 704 View My Garage	6L90 As usual these AGP guys know their stuff. 6L90 it is. You know what they say. The devil is in the details. 1.4 inches is the number I need.

05-16-2017, 03:42 PM	#18
AGP Turbo Drives: All things Turbocharged Join Date: Dec 2010 Location: AZ Posts: 1,199	Do not use a truck 6L90, it has a totally different tail section. You need an actual ZL1 trans and cross member. Have the front section of your driveshaft shortened 1.4" Do a Write Entire on the TCM with HPTuners to put your tune file in the trans. The dealership doesn't have to flash anything. Done. The 6L90 fits exactly the same as 6L80 other than being 1.4" longer.

12-16-2018, 04:51 AM	#21
John_C LSx FTW!!! Drives: 2010 Camaro 2SS RS Join Date: Jan 2017 Location: TN Posts: 767	Anyone know where to buy the ZL1 6L90E and how much they cost? About to do a D1X stage II myself.... jrylb73 how much boost are you running? __________________ 2010 2SS RS A6 781rwhp on E85 Stage 2 ProCharger D1X Circle D 3400 Triple Disc Kooks Jet Hot Headers Kooks Full 3in exhaust Trick Flow GenX 255's Polished PAC .660's & Ti-retainers TSP VVT 3.2 cam kit w/DoD Delete Smith Bro's Trunnion kit AEM X-Series OBDII Widebands FIC ID1300x Injectors GM ZL1 High Output Fuel Pump DSX Tuning Flex Sensor DSX Auxiliary Fuel System Tim King Stage 4 Max Effort CTSV 6L90 DSS 1 piece aluminum driveshaft JRE 6L80E / 6L90E Dipstick NGK Iridium IX spark plugs #7 heat range Mighty Mouse Camaro 5 Wild w/-12an and Billet Black HP Tuners VCM Suite