Originally Posted by Cuda340
Besides the variable valve timing, the 5.7 Hemi has an expanded MDS operating range, an increased compression ratio, improved port flow, and reduced restriction exhaust and induction. Other updates are crankshaft structural upgrades, a dual-mass crankshaft damper, floating pin piston design, valve spring design and increased oil pump capacity.
yep... and there is a GREAT write up in the August issue of Mopar Action (magazine p.52) about all of the changes to the 5.7L. Cool stuff!! See the cover here
http://www.moparaction.com/Next/next.html The same issue also has great info on the coming '09 Challengers.