Not 100% sure about the 6.4, but I thought they still used the 5 speed.
Ahh, I just checked jeep.com and 8 speed is standard on the SRT. BUT.... Is that a beefed up tranny or not?
Actually, there "seems" to be a difference. For the SRT the transmission is an 8HP70. Anything under SRT (except diesel) does not list the 8HP70. HP is for High performance obviously.
The diesel actually uses the 8HP70 also. The 3.6 or 5.7 Hemi does not.
Sorry for the confusion.
3.0 diesel - with 240 horsepower and 420 lb-ft of torque. Calls for 8HP70 tranny.
3.6 - delivers 290 horsepower and 260 lb-ft of torque. Calls for standard 8 speed.
5.7 - It delivers 360 horsepower and 390 lb-ft of torque. Calls for torqueflight 8 speed tranny.
6.4 SRT - delivers 475 horsepower, 470 lb-ft of torque. Calls for 8HP70 tranny.
Now unless they are not consistent on the jeep.com website and just lazily not entering the correct transmission descriptors and all of these transmissions are in fact identical...... then to my original question.
Possible that because both the diesel and the 6.4 Hemi push over 400lb ft. of torque, that the 8HP70 is utilized.
I'm sure somebody with more knowledge than myself are abundant around here. Enlighten me please.