I am trying to supply any answers I can. I did notice ever since new cam was installed that it lacked the lopey idle of my first smaller cam. I figured with a bigger solid roller cam it would have a noticeable rougher idle. It didn't. At 800 rpm it didn't even lope at all and the exhaust note was weaker sounding. I am trying to accurately describe this entire process. The new cam is a solid roller Comp Cams .570 lift. 274/280 Duration @.050 is 236 242 Lobe lift is .3770 .3810
