I know there is a ton of info on cams out there, I've spent hours trying to find out what I need to know with out luck. I've read how the cam works and still I cant figure it out. I have a 5.3 lm7, I will be installing a supercharger and I want to put the 241 heads on it to lower the compression while I have everything else apart for the cam swap spring and push rod upgrade. Basically what I want to know is what's the best timing to set a 2001 ls6/zo6 for a FI 5.3. Any advice would be greatly appreciated guys!