06-04-2009, 01:40 AM
What effect does the increase in rocker arm size (ratio?) have on the engine, and would they be a worthwhile addition to the 570 hp s/c package? Right now I am considering the 570 package, with a full exhaust (ARH headers/cat back), and wonder if these would be worthwhile to have added. Thanks in advance, hoping for a January/February 2010 purchase coordinated with an install.