Originally Posted by
CL770
If your going to change the transmission, then another option to consider is to fit the 6 speed manual. I can help you with that as well. The 6 speed will have no problems with a stock (to mild) SRT6 and the NA auto transmission will definitely not have any issue. I believe the main reason that the 6 speed manual wasn't available on the SRT6 was that it would have been too hard to meet emission standards. The M112K engine did not have EGR and a manual trans would have just made things worse.
You are probably 100% correct in what you say. I have no experience putting NA Crossfire manual trans into SRT-6's, and so of course I defer to your real-world experience on this matter.
Chrysler did rate the NSG370 Transmission's input torque capacity as
272 lb⋅ft. The listed torque of the SRT-6 is 310 lb⋅ft although one of the Crossfire's main development engineers is on video saying that the SRT-6 was downgraded from the Mercedes' horsepower & torque (332 lb⋅ft) ratings on paper only as a marketing decision, as the exhaust systems & ECU programming are identical.