I have never installed a cam cuz it makes a lumpy idle( that Duster sounds good tho). No. I choose the cam to put the power in a certain rpm range and to have a certain powerband, dictated by the tranny ratios, at that rpm.Then crank the Scr up, to optimize the Dcr.
How it idles is of no consequence to me.
While the Hughes philosophy works, for some, .....................................