Looking for a tow vehicle - Diesel Edition

[Yaj Yak]

get as new as a tahoe as possible with as many trans gears as you can afford.

 

[Bob Kazamakis]

get as new as a tahoe as possible with as many trans gears as you can afford.

They only go to 6

 

[Kensington]

They only go to 6

Don't some of the newer ones have 8?

 

[EmersonHart13]

Too bad there isn't a banger

 

[Yaj Yak]

They only go to 6

i thought some had 8's?

Don't some of the newer ones have 8?

i thought so too

 

[Yaj Yak]

so tahoe's don't but escalades and denali yukons got 8 speeds in 2015 until 2017- then 2018 the ten speed took over.


some yukon/tahoes had 8 speeds in 2017 but it seems rare

 

[Yaj Yak]

well this was a weird hole to go down.

https://tbssowners.com/forums/6l80e-6l90e/59446-6l80-90e-swap-faqs.html

 

[Kensington]

well this was a weird hole to go down.

https://tbssowners.com/forums/6l80e-6l90e/59446-6l80-90e-swap-faqs.html

Hello game changer...

 

[CMNTMXR57]

Yea, but a lot of coin, especially if you have an AWD SS.

 

[Kensington]

Yea, but a lot of coin, especially if you have an AWD SS.

How much is a built 4L60? Plus 6 speed!

 

[Kensington]

Also, why do the TBSS’ blow transmissions?

 

[CMNTMXR57]

How much is a built 4L60? Plus 6 speed!

The place I have my transmissions done at, FLT over in Wooddale (Chuck);

A maximum performance (level 7 I believe) 4L65E, is around $4,200. This is $6,800 for the AWD version, and requires a lot of electronic modification, as well as driveshaft modifications if you go with the 6L90 because it is about 2" longer than the 6L80E, all to get 2 extra gears. I'm not knocking it, as if I had TCG stacks, I'd want to have the most amount of gears available. But I think that there is more cost effective, easier to swap options, albeit with 4 gears, out there.

As to why they blow, 4L65E's aren't known to be considerably strong transmissions when adding bigger power to them. Add in an heavy (4,300 pound) SUV, with AWD, and something's gotta give on hard launches. Usually, it's the front driveline, but...

 

[Kensington]

The place I have my transmissions done at, FLT over in Wooddale (Chuck);

A maximum performance (level 7 I believe) 4L65E, is around $4,200. This is $6,800 for the AWD version, and requires a lot of electronic modification, as well as driveshaft modifications if you go with the 6L90 because it is about 2" longer than the 6L80E, all to get 2 extra gears. I'm not knocking it, as if I had TCG stacks, I'd want to have the most amount of gears available. But I think that there is more cost effective, easier to swap options, albeit with 4 gears, out there.

As to why they blow, 4L65E's aren't known to be considerably strong transmissions when adding bigger power to them. Add in an heavy (4,300 pound) SUV, with AWD, and something's gotta give on hard launches. Usually, it's the front driveline, but...

I thought the TBSS’ were a 4L70E? (Id never heard of that designation)

 

[CMNTMXR57]

You're concerning yourself over brass tacks. I just call it that because most assimilate it to that family. Most don't know there was a 4L70E and then an even bigger 4L80/85E. But they're all the same family of transmissions dating back to the old 700R-4. The main differences are obviously higher torque capacity ratings and small things (input speed sensor on the 70E's), but again, overall, they're the same family of GM Hyrda-matics for RWD vehicles. The 70 and then 80/85E were used in the trucks and some Rolls-Royce's.