transmission and PTU
- Thread starter Txstrmhntr
- Start date
Since solenoids are at the heart of the transmission, yeah, I would refrain from experimenting unless I had the funds and were willing to swap/rebuild. Shouldn't happen quickly logically, but logic is based on known constraints. Who knows the trans may even like it ...
Have been wondering if anyone has looked into this any further. Know I need a new trans shortly wondering if I bought a new 6t80 trans how difficult would the swap be. Hope to see this done eventually if the 6t80 is improved over the 6f55 in any notable way?
Sent from my SM-N950U using Tapatalk
Sent from my SM-N950U using Tapatalk
https://www.sourceoneautoparts.com/24265608-6t80-transmission-6-speed-automatic-2014-16-cadillac-xts-vsport.htmlAJP turbo said:
Found these 6t80 trans at a decent price it says it's final gear drive is 3:16 which is the same as the 6f55 used in the police interceptor sedans which is what I'd be doing the swap in. If it did bolt right up with no issues and the wiring harnesses look the same but never know could be ever so slightly different but hoping not. Would the car require a custom tune to be driven or if the final gear ratio is the same and ends up being easy as a OEM install would it be safe to drive the car atleast on a trailer to get it home to be messed if even nescessary?
Sent from my SM-N950U using Tapatalk
glock-coma
New member
Umm...that’s a Cadillac (GM) trans.Cole.C said:
I HIGHLY doubt it will bolt up.
Nor will the wiring harness match.
The cases look the same, bolt pattern looks the same as well as harness.. I'd have to order it and try to have it bolted up. set side by side you'd barely be able to tell the difference besides the 6t80's added case ribbing compared to the 6f55. but yes thanks I'm trying to buy and install a GM trans... even if I do have to have an adapter made or go through some weird pains I was quoted for the new 6f55 supposedly "at cost" for 1799 warrantied from the local stealership that loves to lie. I can get the 6t80 for 1299. Still could get an adapter made and a ever so slightly improved trans for less than the cost of the new trans Ford quoted me at..glock-coma said:
Sent from my SM-N950U using Tapatalk
Thanks, that I did not know. Dang so how much would it complicate things trying to swap a trans with different final gear ratio? Probably a very dumb question but Is that something that can be fixed with a tune or just completely rules out compatability >.<? Appreciate the info!bpd1151 said:
Sent from my SM-N950U using Tapatalk
autobahn terror
New member
Just so your all tracking, the 6T80 is basically the same transmission. I had read this a few years ago but it took me a couple of days to find the article. The 6T/6F was jointly developed by ford and GM to save money there is no advantage to the 6T80. See Below from wikivisually...
https://wikivisually.com/wiki/GM-Ford_6-speed_automatic_transmission
GM-Ford 6-speed automatic transmission [show article only]
From Wikipedia, the free encyclopedia [show wikipedia page here]
6T/6F
Overview
Manufacturer General Motors/Ford
Production 2006–
Body and chassis
Class 6-speed transverse automatic transmission
Chronology
Predecessor 4T60-E/4T65-E
4T80-E
AX4N
General Motors and Ford Motor Company cooperated in 2002 to create a new automatic transaxle, designed for transverse engine applications in cars. The companies jointly committed to investing US$720 million in their manufacturing plants to support the new transmission.
Each company will name and manufacture the transmission separately:
Ford builds the 6F50 and 6F55 along with the 6F35 (related to the GM 6T40 transmission) at their Van Dyke Transmission Plant in Sterling Heights, Michigan, and in the future at Sharonville Transmission in Sharonville, Ohio.
GM builds the 6T70, 6T75 and 6T80 at Warren Transmission in Warren, Michigan with production starting in July, 2006.[1]
Ford claims the 6F50 is designed to handle 300 hp (224 kW) and 280 ft·lbf (380 N·m), while General Motors rates their 6T70 to 315 hp (235 kW) and 280 lb⋅ft (380 N⋅m), the 6T75 to 315 hp (235 kW) and 300 lb⋅ft (407 N⋅m), and the 6T80 to 410 hp (306 kW) and 369 lb⋅ft (500 N⋅m). GM lists the wet (with fluids) weight of the 6T70/75/80 to be between 102 kg (225 lb) and 104.7 kg (231 lb).
Ford appears not to have made a public statement regarding the 6F55's maximum capabilities, but uses it in AWD in the Taurus SHO with an engine rated at 272 kW (370 PS; 365 hp)and 475 N·m (350 lb·ft) of torque (Final drive 2.77:1 standard or 3.16:1 with SHO Performance Package).
The first application of the technology is in the 2007 Ford Edge and Lincoln MKX crossover SUVs, as well as the Saturn Aura sedan and the Saturn Outlook crossover. It was also used for the Pontiac G6 GTP models and the GMC Acadia models for 2007. Prior to 2009, this transmission had issues caused by a very weak 3,5,R wave plate, which made this transmission prone to failure in GM products. Updated wave plates were released for many clutches in 6T70, the old design wave plates weren’t stress relieved and could break with use. The updated wave plates are available under the following part numbers:
https://wikivisually.com/wiki/GM-Ford_6-speed_automatic_transmission
GM-Ford 6-speed automatic transmission [show article only]
From Wikipedia, the free encyclopedia [show wikipedia page here]
6T/6F
Overview
Manufacturer General Motors/Ford
Production 2006–
Body and chassis
Class 6-speed transverse automatic transmission
Chronology
Predecessor 4T60-E/4T65-E
4T80-E
AX4N
General Motors and Ford Motor Company cooperated in 2002 to create a new automatic transaxle, designed for transverse engine applications in cars. The companies jointly committed to investing US$720 million in their manufacturing plants to support the new transmission.
Each company will name and manufacture the transmission separately:
Ford builds the 6F50 and 6F55 along with the 6F35 (related to the GM 6T40 transmission) at their Van Dyke Transmission Plant in Sterling Heights, Michigan, and in the future at Sharonville Transmission in Sharonville, Ohio.
GM builds the 6T70, 6T75 and 6T80 at Warren Transmission in Warren, Michigan with production starting in July, 2006.[1]
Ford claims the 6F50 is designed to handle 300 hp (224 kW) and 280 ft·lbf (380 N·m), while General Motors rates their 6T70 to 315 hp (235 kW) and 280 lb⋅ft (380 N⋅m), the 6T75 to 315 hp (235 kW) and 300 lb⋅ft (407 N⋅m), and the 6T80 to 410 hp (306 kW) and 369 lb⋅ft (500 N⋅m). GM lists the wet (with fluids) weight of the 6T70/75/80 to be between 102 kg (225 lb) and 104.7 kg (231 lb).
Ford appears not to have made a public statement regarding the 6F55's maximum capabilities, but uses it in AWD in the Taurus SHO with an engine rated at 272 kW (370 PS; 365 hp)and 475 N·m (350 lb·ft) of torque (Final drive 2.77:1 standard or 3.16:1 with SHO Performance Package).
The first application of the technology is in the 2007 Ford Edge and Lincoln MKX crossover SUVs, as well as the Saturn Aura sedan and the Saturn Outlook crossover. It was also used for the Pontiac G6 GTP models and the GMC Acadia models for 2007. Prior to 2009, this transmission had issues caused by a very weak 3,5,R wave plate, which made this transmission prone to failure in GM products. Updated wave plates were released for many clutches in 6T70, the old design wave plates weren’t stress relieved and could break with use. The updated wave plates are available under the following part numbers:
