If you want a lopey cam, look for a cam that has a 110-108 Lobe Separation Angle (LSA). And if I remember correctly Comps Thumper series are all roller cams, so that will require expensive roller followers, steel distributor gear, cam thrust bearing/ cam retainer, and some serious valve spring pressures. It would be easier to get a larger cam with a tighter LSA. But the downside is that you will loose low end power and your fuel economy will severely suffer because of the extended overlap of the valve timing. I you have to remember also that you need to have a minimum of .050 clearance between your spring retainer bottom and the top of your valve guide seal. There are cutters you can buy to machine the valve guide seal down to allow for more lift. Then you have to worry about having enough clearance in your springs them selves to avoid the coils from binding. You cannot just slap together parts and hope that it works.
