Intake choice

I used to "upgrade" 318's to 340 specs pretty often. That would include honing with torque plates, good rings bearings, windage tray, high pressure oil pump, double true roller timing set, 340 cam, lifters, 340 valve springs, milling heads .020 (max cut for the money) and .019 on the intake side of the head, tight guides, Viton valve seals, any 360 heads, cast iron 340 intake, carb, find TDC, degree the cam, quick curve distributor with 25 degrees of centrifugal advance, set timing at 10 degrees before TDC. They would run like a 72/73 340. 340's did not really take off till 3,000 rpm and pull past 6,000 rpm from the factory, that is what high performance means to me.