Quote:


5.2's have more lift, but less duration



Here's a related thread on the cams:
https://board.moparts.org/ubbthreads/show...&PHPSESSID=

I suspect the OEM goal was to give a similar-shaped torque curve between 5.2 and 5.9. The intake manifold was the same, so the cam was tweaked as needed. (obviously the 5.9's curve is higher)