Here is another thing Davis , when you are building a motor it is more about the complete package ... One decision kind of dictates where you take the whole build ... The hemis usually stock are in the hole at least 20 they have a big chamber so comp. Ratio is already not great .. using a stock carb you will never see the full potential of a high lift cam ... That being said you can figure out a nice mild combo that does what you want it to .. a plus 20 rod , thin head gasket , 26# springs , locks and retainers , arc flywheel , Mamba jr cam and a good header and air filter and you will have a very respectable little motor