Ford 10spd Transmission
Printed From: Unofficial Allis
Category: Other Topics
Forum Name: Shops, Barns, Varmints, and Trucks
Forum Description: anything you want to talk about except politics
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=210038
Printed Date: 30 Mar 2026 at 4:02pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Ford 10spd Transmission
Posted By: Codger
Subject: Ford 10spd Transmission
Date Posted: 11 Feb 2026 at 8:04am
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Buddy of mine has a 2019 F-150 w/Eco-Boost 3.5ltr engine and 10 spd trans that is beginning to give him fits. Shaking, binding, sluggish action more frequently than in the past. Engine oil changes every 5K, transmission oil and filter Bi-annually with both services performed at the local Ford dealer. He asked me to look at it and I've read enough, and know enough people with this transmission and it's characteristics to know what he's in for. There are product redesigns, software revisions, driver adaptability algorithms updates, (software) and Ford is involved in class action lawsuits over this transmission. Here is a small blurb I found on the internet that explains just a few flaws folks are experiencing with this transmission series: 
------------- That's All Folks! |
Replies:
Posted By: NEVER green
Date Posted: 11 Feb 2026 at 8:13am
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Same tranny as GM but the valve bodies are different, both have issues with valve bodies. Next Gen Drivetrain makes kits and rebuilt valve bodies. ------------- 2-8050 1-7080 6080 D-19 modelE & A 7040 R50 |
Posted By: LouSWPA
Date Posted: 11 Feb 2026 at 8:14am
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would that be the same 10 speed that was developed in conjunction with GM (allegedly)? The same 10 speed that GM was marketing under the Allison trademark that Allison is now taking legal action against GM for?
well, I see NG beat me to it by 50 seconds!
------------- I am still confident of this; I will see the goodness of the Lord in the land of the living. Wait for the Lord; be strong and take heart and wait for the Lord. Ps 27 |
Posted By: coggonobrien
Date Posted: 11 Feb 2026 at 8:43am
| It is the same basic trans as the gm. They are junk. Being run in school buses as well and failing with less than 10k on them. |
Posted By: SteveM C/IL
Date Posted: 11 Feb 2026 at 8:54am
| Sad part is we have the tech, material, and brain power to produce a tranny that would take on all comers, fit many applications and live a long life. Just no money in it. |
Posted By: PaulB
Date Posted: 11 Feb 2026 at 1:23pm
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Today's vehicles are the same as modern medicine/big pharma. They don't want to cure anything, just keep you alive enough to keep you coming back. I'll keep my 40+ year old vehicles going long enough to out last me and that's all I'll need. ------------- If it was fun to pull in LOW gear, I could have a John Deere. Real pullers don't have speed limits. If you can't make it GO... make it SHINY |
Posted By: Codger
Date Posted: 11 Feb 2026 at 1:31pm
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Both the Ford 5R110, and 6R140 seem to be very good and reliable transmissions. They probably should have stayed with that platform. ------------- That's All Folks! |
Posted By: DMiller
Date Posted: 11 Feb 2026 at 1:46pm
| More Gears to spread the narrow Borderline Minimal Capability Engines curves into, to make what should not be in there functional somewhat, Nope, will stick with my Old Junk before go to one of these. May as well have used a Infinitely variable trans as the Asians do. |
Posted By: NEVER green
Date Posted: 11 Feb 2026 at 5:37pm
You can blame the EPA, the 10 speed is all about fuel economy. ------------- 2-8050 1-7080 6080 D-19 modelE & A 7040 R50 |
Codger wrote:Posted By: Codger
Date Posted: 11 Feb 2026 at 7:16pm
Yes, and it does actually work to keep the engine in it's highest torque range. It is the reason heavy trucks with automatic transmissions shift the way they do. Not very fast this way, but efficiency is highest. ------------- That's All Folks! |
Posted By: steve(ill)
Date Posted: 11 Feb 2026 at 7:41pm
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i have a 6R80 6 speed in a 2013 F150... seems to work GREAT...100K miles... but i have heard that some have had trouble with the trans solenoids / wire harness at the PLUG on the trans.. ------------- Like them all, but love the "B"s. |
Posted By: Codger
Date Posted: 11 Feb 2026 at 8:28pm
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That same site had a writeup on that trans also. Less problematic than the 10spd and IIRC the valve body was the largest culprit.
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Posted By: WF owner
Date Posted: 13 Feb 2026 at 7:52am
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It's probably not the same transmission, but I have a 2021 F-350 diesel with the 10-speed transmission (10R140). I have around 70,000 miles on it and a lot of them are heavy towing (my fifth wheel is over 16,000 lbs.). I haven't had one minute of trouble. I find often times, the people that tell how problematic things are, have never owned or used one.
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Posted By: Codger
Date Posted: 13 Feb 2026 at 8:57am
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Yes, that transmission is not the troublesome one with common failure symptoms. I know a couple of parties having the same service as you; one in gas, one diesel. Lot of internet, and youtube experts out there for sure. I always called them: Resident Expert without experience as fitting many times. Buddy is driving the truck 80 miles to visit a transmission man I've known almost 50 years for evaluation this afternoon. Hopefully something that can be worked with at just a few dollars. ------------- That's All Folks! |
Posted By: LouSWPA
Date Posted: 13 Feb 2026 at 9:14am
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How does one determine the 'good' from the 'suspect' transmissions? I have an early '24 2500 Silverado w/"Allison"10 speed. So far, 30,000 miles and no issues. ------------- I am still confident of this; I will see the goodness of the Lord in the land of the living. Wait for the Lord; be strong and take heart and wait for the Lord. Ps 27 |
Posted By: coggonobrien
Date Posted: 13 Feb 2026 at 9:57am
| I think a lot of it is the type of driving you are doing. All highway driving seem to last longer. lots of stop and go smokes them. Our school put 3 transmissions in the same bus in 6 months time. Small rural school. The godzilla gas engine has been great, but 10 speeds are not in this application. |
Posted By: WF owner
Date Posted: 13 Feb 2026 at 12:46pm
I agree. I would add that a lot depends on the driver. Some people have their foot right on the floor when taking off. The application sure makes a difference. When I was working, we had a paint striper that had a 3208 Cat engine and Allison transmission. It ran all day going 8 - 10 mph. We had trouble with it almost every year. Being a cabover, I think we were overheating the transmission fluid, but I couldn't talk the mechanics into installing a transmission fluid temperature gauge.
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Posted By: Wispitfiremike
Date Posted: 14 Feb 2026 at 6:22am
| Just had my 2019 F150 v8 10 speed transmission rebuilt about 2k miles ago, i bought used w about 35k on it and it never shifted as good as it does now. Cheap? No but what choice do you have. Have 70 k on truck now. Hoping with new upgrades it will last my time in this truck until I get too old to get in and out of it. Now if class action is successfull I wouldn't turn down funds to put against the cost. |
Posted By: Coke-in-MN
Date Posted: 14 Feb 2026 at 11:48am
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Was looking up some trans and see the GM 6L80 and the Ford 6R80 both similar the failure rate for Ford is high . The 2010 GMC HD has the 6L80 but truck has 34,000 miles on it . Plow truck and after I bought it I found out is doesn't have 2 speed transfer case so the lower gears in the 6 speed compensate I guess in low end power as the differentials are higher geared . The dang higher fuel ratings thing with a 3:05 gearing , where my 2000 GMC with the 4L80 and 3:73 worked fine but mileage on highway sucked ------------- Life lesson: If you’re being chased by a lion, you’re on a horse, to the left of you is a giraffe and on the right is a unicorn, what do you do? You stop drinking and get off the carousel. |
Posted By: NEVER green
Date Posted: 15 Feb 2026 at 9:43am
Was yours included in the rear wheel lockup recall?? I think I am going to slap an Allison badge on the side of my Ford!  ------------- 2-8050 1-7080 6080 D-19 modelE & A 7040 R50 |