Cool Info, Thanks for the post. Do you know how long this tranny has been around? And do you know if it is true that it is used on the SRT-8's (Charger, 300, Magnum)?
This transmission is infact used in the LX platform cars (Charger, 300, Magnum). It was introduced in 2003-2004. It is also used in the Crossfire, Grand Cherokees, also the Liberty with the 3.7L and also the short-lived diesel engine. It is also found in a Dodge Sprinter. This transmission is designed by Mercedes-Benz.Cool Info, Thanks for the post. Do you know how long this tranny has been around? And do you know if it is true that it is used on the SRT-8's (Charger, 300, Magnum)?
I've heard from a couple of different sources about how this is a "smart" transmission that "learns" your driving habits as well as tries to maximize both fuel efficiency and performance. Can you explain that to the group?
So my dealer told me today, that it takes 10-15000 K for it to smooth out, doesn't seem right to me....It has all the info right in the owners manual on page 250:
5 speed trans "the transmission electronics are self calibrating, therefore the first few shifts may be somewhat abrupt, this is normal and precision shifts will develop withtin a few hundred miles....................its all in the manual
Doesnt say how it does it but this tells about the trans (their is more read it if you want to get the full version)
This also explains the "Hard" shifting complaint that some people have reported in the R/T
I wouldn't call the NAG1 a truck transmission. The NAG1 is found in many Chrysler products. Jeep Liberty's, Grand Cherokee's, SRT8, Ram Truck, Sprinters, and so on. The difference is the input torque ability of the transmission. Being capable to be mated to a 6.1L HEMI it can handle anything the 4.0L in the Nitro can dish out.Being from a family of Grand Caravan owners, needless to say I am well aware of the long list of transmission/CPU problems Dodge/Crystler has had in the past years...
I was told in the past that part of the reason Dodge/Crystler had soo many transmission problems was because they were using car transmissions in their Van's and small SUV's instead of more heavy Duty Truck transmissions.
So My question is, is this Nag1 transmission a "Truck" transmission?
I am considering the R/T and plan on using it for towing. I don't want to put 3 transmissions in it by the time I reach 100,000 miles....
Also, how does the Nag1 Transmission differ from the 42RLE transmission? I test drove both an SLT, and an R/T The SLT actually felt a little more responsive, But I wasn't sure if that was due to being 1 less gear, a different gear ratio, or transmission design in general?
Never heard that one before. The adaptive programming for these transmissions relearns in less then 1000km.So my dealer told me today, that it takes 10-15000 K for it to smooth out, doesn't seem right to me....
You sir, are a wealth of information, I was asking what the stall speed was of the NAG1 transmission, in hopes of yes you guessed it, a high stall torque converter. Regardless of your race car input, I had a 1800 stall speed TQ in my last car and loved it, I also had it paired with a LSD from the Toyota Supra.Stall speed is related to the torque converter.
Stall is roughly the speed in RPM where the torque output nearly matches the input. In theory the engine will stall with your foot on the brake if you rev the engine to this speed. This is does not always happen in practice so don't try it to test stall speed.
Basically high stall speed means more slippage at low RPM but more torque multiplication. High stall speed converters are used on drag race cars or hot street cars that are tuned for high power at higher RPM.
Thank you. I am curious what it is. I'm sure some performance place has made a high stall if its in the charger/magnum.I haven't seen a published stall speed for the NAG1 torque converter.