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

[lowh07]

I'm going to need to replace my 3.42s with 4.10s shortly after the 4l80 is in. Is it recommended to replace the carrier as well as ring/pinion?

If anyone has recommended part numbers that would be awesome.

 

[swathdiver]

It does fly by.
My oldest turns 16 next month and can get his license.

Our oldest has given a grandchild to spoil already and our youngest just turned 15 and another is in college now, talking about joining the Navy!

I'm going to need to replace my 3.42s with 4.10s shortly after the 4l80 is in. Is it recommended to replace the carrier as well as ring/pinion?

If anyone has recommended part numbers that would be awesome.

Carrier is the same unless you want a new one. You can look up ring and pinion PNs from ACDelco's website or AAMs https://s3.amazonaws.com/aamsiteassets/resources/file-20180329163830.pdf

Ohh, how come you NEED to do it? Performance?

 

[lowh07]

Carrier is the same unless you want a new one. You can look up ring and pinion PNs from ACDelco's website or AAMs https://s3.amazonaws.com/aamsiteassets/resources/file-20180329163830.pdf

Thanks! I'm wondering how strong the stock carriers are... I'd hate to swap the gears out then have to do it over again

 

[swathdiver]

Thanks! I'm wondering how strong the stock carriers are... I'd hate to swap the gears out then have to do it over again

Well, the 8.6 is not as strong as a 9.5 and the 8.6 Eaton Carriers are stronger than stock so you may want to consider the Trutrac.

https://www.eaton.com/Eaton/Product...rket/Differentials/detroit-truetrac/index.htm

 

[lowh07]

Well, the 8.6 is not as strong as a 9.5 and the 8.6 Eaton Carriers are stronger than stock so you may want to consider the Trutrac.

https://www.eaton.com/Eaton/Product...rket/Differentials/detroit-truetrac/index.htm

That's probably the way to go for peace of mind

 

[lowh07]

Ohh, how come you NEED to do it? Performance?

Correct... I suppose it's more of a want....... lol

 

[R3cord303]

Yeah, now mine drive me around! Seems like yesterday when they were in strollers.

Hey Allen, @R3cord303 , check out the weight of those airstreams! Built to last means heavy.

Trailer weight doesn't bother me too much for this purpose as its living quarters for vacation. Thing I really like about Airstreams is that the there's none of that ****** terrible membrane crap on the roof like there is on normal recreational camp trailers and toy haulers because that stuff sucks.

 

[swathdiver]

Thanks! I'm wondering how strong the stock carriers are... I'd hate to swap the gears out then have to do it over again

Well, we put over 500 horses and 600+ foot pounds of torque through them 30 years ago in a 3500 pound car. Never broke one. But GM chose to equip any truck with a 6.2 that was RWD or 4x4 with the 9.5 semi-floater over the 8.6 which they used for the AWD 6.2s. That being said, lots of guys have gone trutrac while some others went 9.5.

In the K2s, GM went with the 9.6 or 9.75 Salisbury, very minor difference in size, these are both 12-bolt rears.

 

[swathdiver]

Trailer weight doesn't bother me too much for this purpose as its living quarters for vacation. Thing I really like about Airstreams is that the there's none of that ****** terrible membrane crap on the roof like there is on normal recreational camp trailers and toy haulers because that stuff sucks.

Definitely higher quality and more enduring. My truck would be hard pressed to tow a 19 foot Airstream because of the weight last time I checked.

 

[lowh07]

Well, we put over 500 horses and 600+ foot pounds of torque through them 30 years ago in a 3500 pound car. Never broke one. But GM chose to equip any truck with a 6.2 that was RWD or 4x4 with the 9.5 semi-floater over the 8.6 which they used for the AWD 6.2s. That being said, lots of guys have gone trutrac while some others went 9.5.

In the K2s, GM went with the 9.6 or 9.75 Salisbury, very minor difference in size, these are both 12-bolt rears.

I just found a guy on youtube with a 2004 Tahoe with an LSA blower, and he destroyed the stock 8.6 after a few weeks of adding the blower... went with the trutrac after that