Break-in fluids

My cast crank 440 has 915 CC heads with new valves and double springs. Also 4.88 purple shaft cam is used but for less than 500 miles. was to much cam for my friends 70 Challenger !
stock bore with forged pistons and float pins. Yes ! of course every thing is primed and ready ! oil pump, fuel pump and cooling system ! Brand new carbs ! wondering if I should put on single 4 intake for break-in and put duel four after ?