Whiplash cams

For Dodge74: Well, your Magnum CR is most likely actually in the low 9's or upper 8's if it is stock.. which it may not be. Buuuut, if you are looking for economy and torque, then 107 LSA is certainly not where it is at. The narrower LSA can be used to close the intake earlier to give better DCR, BUT the overlap goes way up and off-idle torque and economy suffer. And yep, sound can be 'faked in' with a cam; increase the overlap so that the low RPM cylinder-to-cylinder fill variations get really out of whack and voila....a knarly idle!

Torque and economy cams typically have LSA's in the 112 and even 114 degree range, with the ICL advanced. Look at the lower duration Crane and Voodoo hydraulic flat tappet cams, Lunati High Efficiency cams, the Crower torque cams (Baja Beast for example) and Racer Brown EH-4 or EH-5. If you want more HP, then the lift has to go up and then the duration consequently HAS to go up too, due to the limitations of how fast the ramps can be; the overlap then increases and DCR and economy drop. So you trade off economy and low RPM torque to gain mid and upper RPM HP. It all works that way, and all these different cams are variations on that.

The only way to modify that appreciably is to:
a) go with a roller cam; with the steeper ramps, you can get useably higher lift without too much duration and overlap increase.
b) Put in bigger valves
c) Edit to add: Put in higher ratio rockers

For KIM, I have the same question as Dartish; stock engine? Also, what is the goal for the engine and the main uses?