ive got a 360 magnum engine running eddy heads and and me gasket this head gaskets so I figure I’m in the area of 9.5-9.7 area for compression, running a voodoo cam, knock off air gap and 750 vac sec carb, 8.8 ign wires, etc. was wondering should I go one size colder plug from a autolite 3924 to a 3923 being running more compression that stock
