Originally Posted by 360view
What changes were made to upgrade the 8 speed automatic to handle the 650 ft-lbs of torque?


There are several versions of the 8spd. A V6 one chrysler builds themselves under license, then the 8HP70 for 5.7 and 6.4 (rated 700nm torque) and an 8HP90 (rated 900nm torque) for hellcats