What did you do to your NNBS GMT900 Tahoe/Yukon Today?

[Rocket Man]

No I know that Auto 4WD =! to AWD. The center diff used inside the case behind the trans is real cool. But on the actual 4wd in the tahoes that have the automatic mode- they have a clutch pack connected to the output for the front axle. In auto mode if the wheel speed sensors detect slip, it will slap the clutch pack shut which is ******* stuff and puts friction material into the fluid in there- which doesn't have a filter like your automatic transmission does.

Yeah we have a viscous coupling lmao. Say that three times real fast.

 

[R3cord303]

Yeah we have a viscous coupling lmao. Say that three times real fast.

GMT900 or GMT800 has a viscous coupling? In the tahoes do both gens have the viscous coupling? Am I wrong? I read long before I even had a tahoe that it was a clutch pack

 

[Wolfbraid]

Changed the oil.... this time didn't use any flush, pulled the plug, no oil, hole was blocked with sludge. yay! wiggled a screwdriver in there, all came out fine after that. Will flush next weekend I guess... Still running fine. I'd pull the pan if it wasn't such a pain.

 

[R3cord303]

Changed the oil.... this time didn't use any flush, pulled the plug, no oil, hole was blocked with sludge. yay! wiggled a screwdriver in there, all came out fine after that. Will flush next weekend I guess... Still running fine. I'd pull the pan if it wasn't such a pain.

Did you cut the filter open and see anything fun inside?

 

[Wolfbraid]

Did you cut the filter open and see anything fun inside?

No, it's just sitting outside right now. Maybe tomorrow unless we leave for the weekend.

 

[BG1988]

Is there a thread of people that have had their vehicle on a dyno?

we all ready know the 6.0 and 6.2l will smoke a 5.3l


the 6.0 has an huge advantage though... as it has a bonus 80HP and lots and lots of torque

 

[R3cord303]

we all ready know the 6.0 and 6.2l will smoke a 5.3l


the 6.0 has an huge advantage though... as it has a bonus 80HP and lots and lots of torque

In other news the sky is blue and waters wet! More at 11...

The cam that went in with the DoD delete and new engine is good for 51hp. Wanted to know wheel hp of other vehicles so I have something to compre it to.

Edit: at least the 6.0 vmax- i forget the RPO- was it L76? Aluminum block is ~150 pounds lighter, and has VVT, so thats an advantage aside from the HP in stock form

 

[BG1988]

In other news the sky is blue and waters wet! More at 11...

The cam that went in with the DoD delete and new engine is good for 51hp. Wanted to know wheel hp of other vehicles so I have something to compre it to.

Edit: at least the 6.0 vmax- i forget the RPO- was it L76? Aluminum block is ~150 pounds lighter, and has VVT, so thats an advantage aside from the HP in stock form

it;s the LFA 6.0 Hybrid Vortec 0.34 coefficient drag..


you will gain more power by Deleting NNBS 1.0v and upgrading to NNBS revision version 2.0

the NNBS beta edition has 0.37 coefficient drag....


even with auto stop & hybrid mode disabled (M mode 4 speed auto) NNBS Rev 2.0 still get 16,5 MPG with 6.0 that is 200% of what a typical truck gets with the 6.0L L76 (city mpgs)..


if your lookimh for better track times that is what you want to do is lower the coefficient drag..

you will have less wind resistance.. with less wind resistance you will have much more available power
that is why dyno reading are pretty useless in the real world and on the road if you have a Aerodynamic drag issue...

 

[Fless]

No I know that Auto 4WD =! to AWD. The center diff used inside the case behind the trans is real cool. But on the actual 4wd in the tahoes that have the automatic mode- they have a clutch pack connected to the output for the front axle. In auto mode if the wheel speed sensors detect slip, it will slap the clutch pack shut which is ******* stuff and puts friction material into the fluid in there- which doesn't have a filter like your automatic transmission does.

Right, but don't forget that the Auto 4WD (not AWD) also has the front diff actuator that takes a second or so to engage the front diff when commanded. The Auto 4WD systems have a clutch pack in the transfer case, and the front diff actuator. NBS, not sure about the NNBS systems.

 

[The_Burban]

Changed the oil.... this time didn't use any flush, pulled the plug, no oil, hole was blocked with sludge. yay! wiggled a screwdriver in there, all came out fine after that. Will flush next weekend I guess... Still running fine. I'd pull the pan if it wasn't such a pain.

Sludge!!??

You running AutoRx or anything to break it up??