Upgrade transmission recommendations?

[Sam Harris]

Ok all, I know my transmission is not going to last forever. I also felt a slip while driving the other day.. [emoji3525] I guess my BB tune will have to wait a bit. So, I’m looking for your recommendations for a good, reasonably priced upgraded transmission and torque converter. Currently just stock motor, with MIT intake and ARH longtubes. I’ll be tuning ASAP, and likely a stage 1 or 2 cam when I can. Someday, I’d like to supercharge her if it’s in the cards, but that would be down the road. So I’m looking for just a bump over stock that can handle a decent HP increase. I’m thinking I like the Cahall performance transmission here: https://cahallperformancetrans.com/4l60e,-65e,-70e
and likely their recommended protorque converter at probably stock stall speed.

Any recommendations, or places to stay away from are much appreciated!

 

[mattbta]

Susbscribed.

 

[petethepug]

Hmm, 03 Yukon right? 4 speed auto. First thing that rings in my mind is can it be swapped to the NNBS 6 speed auto for better mileage, drivability and longevity.


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[Sam Harris]

Hmm, 03 Yukon right? 4 speed auto. First thing that rings in my mind is can it be swapped to the NNBS 6 speed auto for better mileage, drivability and longevity.


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Yessir. That would be sweet.. however, I’m looking for as cost effective as possible. I also believe if the 4l60e is properly built it should have no problem holding up to a couple hundred HP / TQ increase.

 

[mikeyss]

http://www.zerogravityperformance.c...ic-transmission-controller-6l80e-6l90e-6l50e/

I think this is what you need to swap a 6L80 in.

 

[Sam Harris]

http://www.zerogravityperformance.c...ic-transmission-controller-6l80e-6l90e-6l50e/

I think this is what you need to swap a 6L80 in.

Awesome. Maybe someday. Looks like about another grand minimum to go that route, so not in the budget right now. I’d really love to do that, but I’d have to ask for donations if y’all want to see her with a 6L80 installed. [emoji106][emoji16]

 

[HiHoeSilver]

Ok all, I know my transmission is not going to last forever. I also felt a slip while driving the other day.. [emoji3525] I guess my BB tune will have to wait a bit. So, I’m looking for your recommendations for a good, reasonably priced upgraded transmission and torque converter. Currently just stock motor, with MIT intake and ARH longtubes. I’ll be tuning ASAP, and likely a stage 1 or 2 cam when I can. Someday, I’d like to supercharge her if it’s in the cards, but that would be down the road. So I’m looking for just a bump over stock that can handle a decent HP increase. I’m thinking I like the Cahall performance transmission here: https://cahallperformancetrans.com/4l60e,-65e,-70e
and likely their recommended protorque converter at probably stock stall speed.

Any recommendations, or places to stay away from are much appreciated!

I think @Rocket Man is running Performabuilt.

 

[randeez]

6l80 would need a stand alone with gen3 ecm would prob count that out.

there are still a few people/companys doing r&d for the 4l60... not so surprising since its found in so many cars/trucks but i dont know how budget minded its going to be to get one to hold a lot of hp compared to a relatively stock 4l80.

80e would need different transfer case and a little bit of wiring changed.

 

[Sam Harris]

Thanks @randeez. I’m not looking for any huge hp increases right now. I figure an extra 100-150-ish tops.. I mean, I’d love to build a turbo, built 427.. but for now I’ll have to live vicariously through your build. [emoji16][emoji106][emoji631]

 

[randeez]

As long as you also feel the struggles <3

Nah what I mean is a used low mileage 4l80/converter/flexplate $1000, some wiring (free or $150 for swap harness), transfer case can be found under $500, drive shaft mods will be another couple hundred.

$2k doesnt buy a very built 4l60, or maybe it does? Dunno havent looked into them much