power valve makes my 440 ping??

You should never plug the primary power valve unless it's a higher rpm drag only engine. You need the extra fuel metering during the normal and sprited driving. So you put the engine way into lean. Without knowing your combo and your timing curve I'd say use a 5.5 valve and primary jetting around 74. Tell more of what you have (be very specific) and we can help more. But as it stands now, you nee to get a PV back in the primary side.