Do your heads flow much above .550 lift?You may get results from more lift sooner like .100 more by .250/.300 lift from what you have,IDK if other than a roller can do that.

Last edited by Clanton; 10/17/16 11:40 PM.
GOTBOOST!New improved with Victor heads.
http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/