Not sure, but I think in ‘10 or ‘11 they used a different input shaft with 10 splines vs. 26 splines. Hopefully someone who knows this 100% as fact will chime in.

 

Not sure, but I think in ‘10 or ‘11 they used a different input shaft with 10 splines vs. 26 splines. Hopefully someone who knows this 100% as fot will chime in.

Yes. I have the 10spline trans in my 2011. I’m wanting to swap it to a 26spline but it’s far easier and cheaper for me to get one between 15-23 years. But from my understanding it’s not a direct bolt in. There are a few differences. Mainly how the drive shaft bolts up which I don’t know if they sell an adapter and if so does anyone have a link? And what else could be different.

 

Our AI overlord says:

Key differences and required modifications
Speed sensors and electronics:
Newer TR6060: The post-2015 TR6060 transmissions found in newer Challengers and Hellcats do not have a built-in speed sensor, as the vehicle's speed is typically derived from the ABS module or rear differential.
2011 Challenger: The 2011 TR6060 uses a speed sensor on the transmission tailshaft housing.
Swap modification: You will need to install an aftermarket solution for a vehicle speed sensor (VSS). A common method is to mount a reluctor wheel and a sensor to the differential's rear flange.
Bellhousing and input shaft:
Different designs: While the bolt pattern for the bellhousing may be similar, the newer transmission's input shaft and input pocket bearing are designed for a different engine and crank pilot bearing setup.
Swap modification: You will likely need to have the input shaft from the newer TR6060 machined down to fit the pilot bearing used by your 2011 Challenger's engine. A simple input shaft swap from an earlier TR6060 is not possible due to differences in the transmission's pocket bearing.
Hydraulic lines and clutch:
Different clutch line routing: The hydraulic lines for the clutch on the newer TR6060 will have different routing and fittings.
Swap modification: The line from your 2011 master cylinder will need to be adapted to fit the newer transmission's slave cylinder.
Crossmember and mounts:
Different chassis and subframes: The chassis design is different enough that the newer transmission's crossmember will not directly bolt into your 2011 Challenger.
Swap modification: You will need to fabricate or purchase an aftermarket custom crossmember to securely mount the newer transmission.
Driveshaft and output spline:
Varying flange and yoke sizes: While the splines are likely compatible (assuming the newer unit is also a 26-spline), the size and type of the output flange or yoke may vary depending on the specific model the transmission came from.
Swap modification: The driveshaft may need to be shortened, lengthened, or have a different yoke installed to match the new transmission.

https://www.challengertalk.com/threads/tr6060-compatibility-question.687883/

A Guy

 

Wow I didn’t think there was that much differences. If all that is in fact true I’m better off holding off for a 09-14 trans instead.

 

I think the AI has a few things wrong

under the skin, the LC vs. LA models didn't change by much - a '15+ output shaft will have a different coupler vs earlier years

speed sensors on the M6 - '08 - '14 had them off the rear axle and '15 - '23 used sensor on front axle

folks with '11s are in a tough spot due to the one year only 10 spline setup

 

Yep, unfortunately I fall into that 2011 spot lol I guess the easiest thing to do is just find a 26spline manual in the 09-14 years and just swap it in and not deal with any of the other bullshit. I already have a brand new 26spline clutch waiting to go in. Just need a trans.