Help with confusion about cams!!!
I was hoping someone could help clear up some confusion I have about cams. I have heard so many conflicting things about cams. I am building a bracket car with a 9:5:1 351W with stock heads, mild porting, and bigger valves. I have heard that the stock heads are only good for about 5500 RPMs so you shouldn't run a cam with duration more than 230 @50, but then I hear that because of the lack of flow of the heads that you need to run a bigger cam to offset it.
Then I hear because of the heads that you need to keep the lobe seperation at 110 or higher. Then I hear the opposite that due to the lack of flow I need to have a 108 or 106 lobe seperation.
Then I have heard because of the heads you need to run a dual pattern cam, then I hear No because of the heads and that it is a mild engine I need to run a single pattern cam.
Hopefuly someone can clear up the confusion for me.